Author: Ameeba

Overview

The Common Vulnerabilities and Exposures (CVE) system has recently documented a critical security flaw in Reolink v4.54.0.4.20250526, labeled CVE-2025-55619. This vulnerability involves the use of a hardcoded encryption key and initialization vector within the software, posing serious security concerns to any systems or networks running this version of the software. The severity of this issue is underscored by its ability to compromise system security and potentially lead to unauthorized access or data leakage.
This vulnerability affects all users of the Reolink v4.54.0.4.20250526 software, and its implications are vast. Given that an attacker can leverage this flaw to decrypt access tokens and web session tokens, the vulnerability presents a significant risk to the confidentiality, integrity, and availability of affected systems.

Vulnerability Summary

CVE ID: CVE-2025-55619
Severity: Critical (9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Reolink | v4.54.0.4.20250526

How the Exploit Works

The vulnerability stems from the presence of hardcoded encryption keys and initialization vectors in the Reolink software. These hardcoded keys can be discovered via reverse engineering of the software’s codebase. Once these keys are known, an attacker can decrypt access tokens and web session tokens that are stored within the app. This decrypted information can be used to gain unauthorized access to the system or to extract sensitive data.

Conceptual Example Code

Below is a conceptual representation of how an attacker might exploit this vulnerability:

# Reverse engineering the app to extract the hardcoded encryption key and IV
$ reverse_engineer -app Reolink_v4.54.0.4.20250526 -extract_keys
# Using the extracted keys to decrypt a captured web session token
$ decrypt -key extracted_key -iv extracted_iv -input captured_web_session_token

This example assumes that the attacker has already captured a web session token from network traffic, which they then decrypt using the extracted encryption key and initialization vector.

Recommended Mitigation

Users affected by this vulnerability are advised to apply the vendor patch as soon as it becomes available. In the interim, implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help mitigate the risk of exploitation. Regularly reviewing and updating security measures is also recommended to maintain system integrity against emerging threats.

Overview

In a recent discovery, a critical vulnerability, CVE-2025-55398, was identified in the mouse07410 asn1c through 0.9.29, a fork of vlm asn1c. This vulnerability may affect a range of applications and services using this version of asn1c for encoding and decoding ASN.1 data structures. ASN.1 (Abstract Syntax Notation One) is widely used in telecommunications and computer networking, and thus the vulnerability potentially has a broad impact.
The issue lies in the UPER (Unaligned Packed Encoding Rules), where asn1c-generated decoders fail to enforce INTEGER constraints when the bound is positive and exceeds 32 bits in length. This could potentially allow incorrect or malicious input to be processed, leading to serious consequences like system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-55398
Severity: Critical (9.8 – CVSS Severity Score)
Attack Vector: Direct (via malformed ASN.1 data)
Privileges Required: None
User Interaction: None
Impact: System compromise, Data leakage

Affected Products

Product | Affected Versions

mouse07410 asn1c | 0.9.29 and earlier versions

How the Exploit Works

The vulnerability resides in the UPER (Unaligned Packed Encoding Rules) portion of the asn1c. UPER is used for efficient encoding and decoding of ASN.1 data structures. However, when it comes to handling INTEGER constraints that exceed 32 bits in length, asn1c-generated decoders fail to enforce these constraints.
This lack of constraint enforcement allows an attacker to send malformed ASN.1 data that can bypass the checks. This can lead to unexpected behavior or even allow malicious payload execution, depending on the application’s handling of decoded data.

Conceptual Example Code

While the specific exploitation would depend on the application using asn1c, a conceptual example might be similar to the following pseudocode:

# Pseudo-code for exploiting the vulnerability
def exploit(target_system):
malformed_asn1_data = generate_malformed_asn1_data()  # A function to generate malformed ASN.1 data
response = target_system.decode(malformed_asn1_data)  # The system would fail to enforce INTEGER constraints
if response.status == 'Success':
# If the malformed data is processed successfully, it indicates the system is vulnerable
print("System is vulnerable")
else:
print("Exploit failed")

In this pseudo-code, generate_malformed_asn1_data is a function that would create an ASN.1 data structure with an INTEGER constraint that exceeds 32 bits in length. The decode function is used to process the data, and if the system fails to enforce the INTEGER constraint, it would process the malformed data, indicating the system is vulnerable.

Overview

The vulnerability CVE-2024-50644 represents a significant security flaw in zhisheng17 blog 3.0.1-SNAPSHOT. This vulnerability allows an attacker to access the application’s API without any required authentication token, thereby bypassing the built-in security measures. This flaw could potentially lead to system compromise or data leakage, posing a significant threat to any organization utilizing this software. The severity of this vulnerability is underlined by its CVSS Severity Score of 9.8, indicating its critical status.

Vulnerability Summary

CVE ID: CVE-2024-50644
Severity: Critical (CVSS: 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage

Affected Products

Product | Affected Versions

zhisheng17 blog | 3.0.1-SNAPSHOT

How the Exploit Works

The exploit leverages a flaw in the API authentication process of the zhisheng17 blog 3.0.1-SNAPSHOT. The authentication bypass vulnerability occurs when the application fails to properly validate the required authentication tokens. This allows an attacker to make unauthorized API requests without any credentials, thereby gaining unauthorized access to potentially sensitive data and even compromising the affected system.

Conceptual Example Code

Below is a conceptual example of how an attacker might exploit the vulnerability.

GET /api/v1/users HTTP/1.1
Host: target.example.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
Accept: application/json

In this pseudo code, the attacker sends a GET request to the `/api/v1/users` endpoint of the affected zhisheng17 blog application, which should normally require an authentication token. However, due to the flaw, the request is processed without validating the token, providing the attacker with unauthorized access to the data.

Mitigation and Recommendations

To mitigate this vulnerability, it is strongly recommended to apply the vendor’s patch as soon as it is available. In the interim, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) should be used to detect and prevent unauthorized API requests. Additionally, regular security audits should be carried out to ensure the integrity of the system and data.

Overview

In this article, we delve into the CVE-2025-9250 vulnerability, a critical security flaw that was identified in several Linksys range extender models. This vulnerability poses a considerable risk as it can be exploited remotely, potentially leading to system compromise or data leakage. Despite the severity of this issue and the potential for widespread damage, the vendor has yet to respond, further emphasizing the urgency for users to understand this threat and take appropriate mitigation steps.

Vulnerability Summary

CVE ID: CVE-2025-9250
Severity: Critical (CVSS 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Linksys RE6250 | 1.0.013.001
Linksys RE6300 | 1.0.04.001
Linksys RE6350 | 1.0.04.002
Linksys RE6500 | 1.1.05.003
Linksys RE7000 | 1.2.07.001
Linksys RE9000 | 1.2.07.001

How the Exploit Works

The vulnerability resides in the function setPWDbyBBS of the file /goform/setPWDbyBBS. By manipulating the argument ‘hint’, an attacker can cause a stack-based buffer overflow. This type of overflow is especially dangerous because it can allow an attacker to execute arbitrary code on the affected device, potentially taking control over the system or exfiltrating sensitive data. As the attack can be launched remotely and the exploit code is publicly available, it presents a significant threat to any unpatched system.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This could be a sample HTTP request that sends a malicious payload to the vulnerable endpoint, causing a buffer overflow.
“`http
POST /goform/setPWDbyBBS HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
hint=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Overview

In this blog post, we delve into a critical vulnerability identified in several Linksys range extenders, specifically the RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 models. These models are widely used to extend the range of WiFi networks in homes and businesses, making this vulnerability a pressing concern. It has the potential to compromise systems or result in data leakage, impacting privacy and security on a large scale.
This vulnerability, designated as CVE-2025-9249, is particularly dangerous due to its remote exploitability and potential for system-wide damage. Despite early notification to the vendor, there has been no response or remedy, which underscores the critical importance of understanding this vulnerability and taking steps to mitigate its impact.

Vulnerability Summary

CVE ID: CVE-2025-9249
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Linksys RE6250 | 1.0.013.001
Linksys RE6300 | 1.0.04.001
Linksys RE6350 | 1.0.04.002
Linksys RE6500 | 1.1.05.003
Linksys RE7000 | 1.2.07.001
Linksys RE9000 | 1.2.07.001

How the Exploit Works

The vulnerability resides in the DHCPReserveAddGroup function of the /goform/DHCPReserveAddGroup file. The function mishandles the manipulation of the argument enable_group/name_group/ip_group/mac_group, leading to a stack-based buffer overflow. This can be exploited remotely by a malicious actor who sends specially crafted data to overflow the buffer, leading to erratic program behavior or even system crash.

Conceptual Example Code

A conceptual representation of how the vulnerability might be exploited is provided below:

POST /goform/DHCPReserveAddGroup HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
enable_group=1&name_group=Test&ip_group=192.168.1.1&mac_group=A1:B2:C3:D4:E5:F6&extra_data=...overflown_data...

In this example, the `extra_data` parameter contains the overflow data that exploits the buffer overflow vulnerability. Please note that this is a conceptual example and real-world exploits may vary based on specific conditions and the attacker’s intent.

Countermeasures and Mitigation

As of the time of writing, the vendor has not released any patch or update to address this vulnerability. As a temporary measure, users are advised to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and prevent potential exploits. As always, it is recommended to keep all software and hardware up-to-date and to maintain proper security hygiene.

Overview

In the world of cybersecurity, vulnerabilities are an inevitable issue that every organization must face. Among these vulnerabilities, a major one was recently identified in specific Linksys devices that could potentially compromise systems and lead to data leakage. The vulnerability, dubbed CVE-2025-9248, poses a severe threat to Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000 devices. This vulnerability matters because it allows a remote attacker to potentially gain unauthorized access and compromise the system, leading to loss of sensitive data.

Vulnerability Summary

CVE ID: CVE-2025-9248
Severity: Critical (8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

Linksys RE6250 | 1.0.013.001, 1.0.04.001, 1.0.04.002
Linksys RE6300 | 1.0.013.001, 1.0.04.001, 1.0.04.002
Linksys RE6350 | 1.1.05.003, 1.2.07.001
Linksys RE6500 | 1.1.05.003, 1.2.07.001
Linksys RE7000 | 1.1.05.003, 1.2.07.001
Linksys RE9000 | 1.1.05.003, 1.2.07.001

How the Exploit Works

The vulnerability resides in the function RP_pingGatewayByBBS of the file /goform/RP_pingGatewayByBBS in the Linksys devices. A malicious user can manipulate the ssidhex argument in this function to cause a stack-based buffer overflow. This overflow can be leveraged to execute arbitrary code on the device, potentially leading to full system compromise. The attack may be performed remotely, increasing its potential impact.

Conceptual Example Code

While this example does not represent actual exploit code, it provides a conceptual illustration of how an attacker might trigger the vulnerability:
“`http
POST /goform/RP_pingGatewayByBBS HTTP/1.1
Host: target.linksysdevice.com
Content-Type: application/x-www-form-urlencoded
ssidhex=414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141414141

Overview

A high-severity vulnerability, indexed as CVE-2025-9247, has been discovered in Linksys RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. This vulnerability stems from a flaw in the handling of the setVlan function, which can lead to a stack-based buffer overflow. This vulnerability is of notable concern, given the widespread use of Linksys routers and the potential for remote exploitation, leading to possible system compromise or data leakage.
The vulnerability was publicly disclosed, making it a more pressing issue for users and network administrators who utilize the affected devices. Despite early notification, the vendor has yet to provide a response or remedy, increasing the urgency of understanding and mitigating this threat.

Vulnerability Summary

CVE ID: CVE-2025-9247
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Linksys RE6250 | 1.0.013.001
Linksys RE6300 | 1.0.04.001
Linksys RE6350 | 1.0.04.002
Linksys RE6500 | 1.1.05.003
Linksys RE7000 | 1.2.07.001
Linksys RE9000 | 1.0.013.001

How the Exploit Works

The vulnerability lies in the setVlan function of the /goform/setVlan file. The improper handling of the vlan_set argument allows for a buffer overflow condition. An attacker can manipulate the vlan_set argument to cause the stack-based buffer overflow, which could potentially lead to the execution of arbitrary code on the affected device.

Conceptual Example Code

The following conceptual code illustrates the manipulation of the vlan_set argument, causing the buffer overflow.

POST /goform/setVlan HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
vlan_set=OVERFLOW_DATA

In this example, OVERFLOW_DATA is a string longer than the buffer’s capacity, causing a buffer overflow. Please note that this is a conceptual example and the actual exploit may involve more intricate steps or manipulations.

Mitigation Guidance

Until a vendor patch is released, users can deploy a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation measures. These systems should be configured to detect and block suspicious activities related to the setVlan function. Regularly monitor your network for any unusual activity and ensure all devices are kept up-to-date with the latest security patches and updates.

Overview

CVE-2025-9246 is a critical vulnerability found in several models of Linksys wireless range extenders. This flaw exposes the devices to the risk of a stack-based buffer overflow attack, which can be executed remotely. The affected devices include Linksys models RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. This vulnerability is of significant importance because of the potential for system compromise and data leakage. The vendor, Linksys, has been contacted about the issue but has yet to respond or provide a patch.

Vulnerability Summary

CVE ID: CVE-2025-9246
Severity: Critical (CVSS 8.8)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Linksys RE6250 | 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001
Linksys RE6300 | 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001
Linksys RE6350 | 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001
Linksys RE6500 | 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001
Linksys RE7000 | 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001
Linksys RE9000 | 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001

How the Exploit Works

The vulnerability lies in the function “check_port_conflict” of the file “/goform/check_port_conflict. The manipulation of the argument “single_port_rule/port_range_rule” can lead to a stack-based buffer overflow. Buffer overflow occurs when more data is put into a buffer than it can handle, causing an overflow of data into adjacent storage. This overflow can overwrite other data or cause the executing program to crash, potentially leading to execution of arbitrary code or complete system compromise.

Conceptual Example Code

POST /goform/check_port_conflict HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
single_port_rule=1&port_range_rule=%s

In the above example, `%s` represents a string of characters that is longer than what the buffer in the “check_port_conflict” function can handle. This causes a buffer overflow, potentially allowing the attacker to execute arbitrary code or compromise the entire system.

Mitigation Guidance

In the absence of a patch from the vendor, it is recommended to use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and prevent any attempts to exploit this vulnerability. Monitor network traffic for any unusual activity and ensure that all devices are running the latest firmware version.

Overview

A significant security vulnerability, CVE-2025-9245, has been identified in several models of Linksys Wi-Fi range extenders. The vulnerability resides in the function WPSSTAPINEnr of the file /goform/WPSSTAPINEnr and can potentially lead to a complete system compromise or data leakage. Given the widespread use of these devices, this vulnerability presents a substantial risk and requires immediate attention. This vulnerability is especially serious because it can be remotely exploited, and a working exploit is publicly available.

Vulnerability Summary

CVE ID: CVE-2025-9245
Severity: High (8.8 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Linksys RE6250 | 1.0.013.001
Linksys RE6300 | 1.0.04.001
Linksys RE6350 | 1.0.04.002
Linksys RE6500 | 1.1.05.003
Linksys RE7000 | 1.2.07.001
Linksys RE9000 | 1.2.07.001

How the Exploit Works

The vulnerability arises from the manipulation of the ssid argument in the WPSSTAPINEnr function. This manipulation results in a stack-based buffer overflow, a common vulnerability that occurs when more data is written into a buffer than it can handle. This overflow can overwrite adjacent memory locations and potentially lead to arbitrary code execution. In this case, the vulnerability can be exploited remotely, meaning an attacker does not need physical access to the device.

Conceptual Example Code

This is a hypothetical code snippet showing how an attacker might exploit this vulnerability:

POST /goform/WPSSTAPINEnr HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "ssid": "AAAAA...[long string]...AAAAA" }

In this example, the ‘ssid’ argument is filled with a long string of ‘A’ characters, enough to overflow the stack buffer and potentially allow for the execution of malicious code.
It’s crucial to note that the vendor has not yet responded to this disclosure, making mitigation efforts even more critical. Affected users should consider implementing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary measure, and stay alert for any vendor-provided patches.

Overview

The CVE-2025-50902 vulnerability is a severe Cross-Site Request Forgery (CSRF) flaw found in the old-peanut Open-Shop, known also as old-peanut/wechat_applet__open_source, up to version 1.0.0. CSRF vulnerabilities allow attackers to manipulate victims into performing actions they do not intend to do, potentially leading to data leakage or system compromise. This vulnerability is of particular concern to businesses and individuals using this software for their e-commerce activities, as it could lead to unauthorized access and manipulation of sensitive data.

Vulnerability Summary

CVE ID: CVE-2025-50902
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

old-peanut Open-Shop (old-peanut/wechat_applet__open_source) | Up to version 1.0.0

How the Exploit Works

The vulnerability is exploited when an attacker crafts a specific HTTP Post message and then tricks a victim into sending this request. The attacker can create a malicious website or email that, when interacted with by the user, sends the crafted HTTP Post request to the vulnerable old-peanut Open-Shop. The server, failing to validate the origin of the request, executes it as if it were a legitimate user action. This flaw allows the attacker to gain unauthorized access to sensitive information.

Conceptual Example Code

A conceptual exploit might look like this:

POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"csrf_token": "stolen_token",
"action": "retrieve_user_data"
}

In this example, the attacker crafts a malicious HTTP POST request using a stolen CSRF token. The action set in the request body instructs the server to retrieve user data, which is then sent back to the attacker.

Mitigation

Users can mitigate the risk of this vulnerability by applying the vendor patch as soon as it is available. In the meantime, they can use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can be configured to detect and block CSRF attacks by identifying and blocking suspicious HTTP requests.