Author: Ameeba

Overview

A critical vulnerability, referred to as CVE-2025-7423, has been identified in Tenda O3V2 1.0.0.12(3880). This vulnerability is particularly concerning due to its potential impact on the integrity of the affected system, and the fact that it can be exploited remotely. The risks include potential system compromise or data leakage, posing a serious threat to organizations that have not yet applied the vendor patch or implemented a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation method.

Vulnerability Summary

CVE ID: CVE-2025-7423
Severity: Critical (8.8/10)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Tenda O3V2 | 1.0.0.12(3880)

How the Exploit Works

The vulnerability lies in the file /goform/setWrlFilterList, particularly in the formWifiMacFilterSet function of the httpd component. The vulnerability is triggered when an attacker manipulates the argument macList. This manipulation leads to a stack-based buffer overflow, which can then be exploited to execute arbitrary code or cause a denial of service, depending on the nature of the overflow and the data being processed.

Conceptual Example Code

An illustration of how this vulnerability might be exploited using an HTTP request might look something like this:

POST /goform/setWrlFilterList HTTP/1.1
Host: targetIPaddress
Content-Type: application/x-www-form-urlencoded
macList=aa:bb:cc:dd:ee:ff%00[arbitrary_code_or_overflow_trigger]

In this example, ‘aa:bb:cc:dd:ee:ff’ represents a MAC address, and the ‘%00’ represents a null byte that begins the buffer overflow. ‘[arbitrary_code_or_overflow_trigger] represents the malicious code or the trigger for the buffer overflow.
Remember, this is a conceptual example and should not be used for malicious purposes. Always follow ethical practices when dealing with cybersecurity vulnerabilities.

Overview

Today, we’re taking a closer look at a critical security vulnerability identified as CVE-2023-38036. This vulnerability exists in the Ivanti Avalanche Manager software versions before 6.4.1. It’s a serious matter because it could potentially allow an unauthenticated attacker to create a buffer overflow, leading to service disruption, or worse, arbitrary code execution. Considering the widespread use of Ivanti Avalanche Manager, this vulnerability poses significant risks to countless systems and networks worldwide and requires immediate attention.

Vulnerability Summary

CVE ID: CVE-2023-38036
Severity: Critical (9.8 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Ivanti Avalanche Manager | Before 6.4.1

How the Exploit Works

This vulnerability arises from a buffer overflow condition within the Ivanti Avalanche Manager. The software fails to properly validate the length of user-supplied data before copying it to an insufficiently sized memory buffer. An unauthenticated attacker can exploit this vulnerability by sending specially crafted data to the affected system. This could trigger a buffer overflow condition, leading to service disruption or arbitrary code execution.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This is not a functioning exploit but a simplified representation to provide a clearer understanding of the vulnerability.

POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "A"*5000 }

In this example, the attacker sends a JSON payload filled with a string of “A” characters. This string is longer than the memory buffer can handle, causing an overflow and potentially allowing the attacker to execute arbitrary code.

How to Mitigate CVE-2023-38036

To mitigate this vulnerability, users of Ivanti Avalanche Manager should immediately upgrade to version 6.4.1 or later, as this version patches the identified vulnerability. For those who cannot upgrade immediately, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary measure. However, these are not definitive solutions and are vulnerable to bypass attempts. Therefore, a patch should be applied as soon as feasible.
In the long term, it’s crucial to follow best practices for secure coding to prevent such vulnerabilities. Regularly conducting security audits and using automated tools to detect potential buffer overflow vulnerabilities can significantly reduce the risks associated with these types of security flaws.

Overview

In the world of cybersecurity, a new vulnerability has been discovered that is classified as critical. This vulnerability, dubbed CVE-2025-7422, affects Tenda O3V2 1.0.0.12(3880) and can potentially lead to the compromise of systems or data leakage. This vulnerability is significant because it can be exploited remotely, putting a wide swath of systems at risk. It’s also important to note that the exploit has been disclosed to the public, which means it could be used by malicious parties.

Vulnerability Summary

CVE ID: CVE-2025-7422
Severity: Critical, with a CVSS score of 8.8
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Tenda O3V2 | 1.0.0.12(3880)

How the Exploit Works

The vulnerability resides in the function setAutoReboot of the file /goform/setNetworkService of the httpd component. The manipulation of the ‘week’ argument can lead to a stack-based buffer overflow. A buffer overflow occurs when an application tries to store more data in a buffer than it was intended to hold. This overflow can overwrite adjacent memory locations, leading to erratic application behavior, including access violations or crashes. In this case, remote attackers can exploit this vulnerability to execute arbitrary code on the affected systems, leading to potential system compromise or data leakage.

Conceptual Example Code

Here’s a conceptual example of how this vulnerability might be exploited. This example is a generic representation and may not work as-is:

POST /goform/setNetworkService HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
week=AAAA...[much longer string of A's]...

In this example, a malicious actor sends an HTTP POST request with an excessively long string for the ‘week’ argument. This string exceeds the buffer size allocated for the ‘week’ parameter, causing a buffer overflow.

Recommended Mitigation

The best mitigation for this critical vulnerability is to apply the vendor patch as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide a temporary mitigation solution. These tools can help detect and block malicious requests attempting to exploit the vulnerability.
Always remember, staying up-to-date with patches and security updates is a fundamental part of maintaining a secure system. If you’re a user or administrator of Tenda O3V2 1.0.0.12(3880), ensure you apply the necessary updates to keep your systems secure.

Overview

A critical vulnerability has been discovered in Tenda O3V2 1.0.0.12(3880), referred to in the Common Vulnerabilities and Exposures system as CVE-2025-7421. This vulnerability lies within the fromMacFilterModify function of the /goform/operateMacFilter file, specifically in the component httpd. The result of this vulnerability is a stack-based buffer overflow that can be exploited remotely. This presents a significant risk to any system running Tenda O3V2 1.0.0.12(3880) due to the potential for system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-7421
Severity: Critical (CVSS 8.8)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: System compromise, potential data leakage

Affected Products

Product | Affected Versions

Tenda O3V2 | 1.0.0.12(3880)

How the Exploit Works

The vulnerability stems from improper handling of the ‘mac‘ argument in the fromMacFilterModify function. This improper handling leads to a stack-based buffer overflow. The attacker, by sending a specially crafted request with a manipulated ‘mac’ argument, can trigger the overflow, which then allows them to execute arbitrary code within the context of the application.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited. This could be a sample HTTP request:

POST /goform/operateMacFilter HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
mac=01:23:45:67:89:ab;payload_that_triggers_buffer_overflow

Mitigation Recommendations

The vendor has provided a patch to fix this vulnerability. It is highly recommended to apply this patch as soon as possible. Until the patch can be applied, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide some level of temporary mitigation. However, these measures will not fully protect against the exploit and should only be used as a short-term solution while patching is underway.

Overview

In the realm of cybersecurity, vulnerabilities are a common occurrence that can open up systems to malicious attacks. One such vulnerability has been discovered in Tenda O3V2 1.0.0.12(3880), a popular networking device. This vulnerability, designated as CVE-2025-7420, is particularly concerning due to its critical nature and the potential for remote attacks leading to system compromise or data leakage.
The vulnerability resides in the function formWifiBasicSet of the file /goform/setWrlBasicInfo of the httpd component. It is significant as it affects a wide range of systems running this software version and can be exploited remotely, leading to a stack-based buffer overflow. This makes it a pressing concern for cybersecurity professionals and system administrators alike.

Vulnerability Summary

CVE ID: CVE-2025-7420
Severity: Critical, CVSS Score 8.8
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

Tenda O3V2 | 1.0.0.12(3880)

How the Exploit Works

The vulnerability arises from improper handling of the ‘extChannel’ argument within the ‘formWifiBasicSet’ function. A remote attacker can exploit this by sending specially crafted input to the ‘extChannel’ argument. This results in a stack-based buffer overflow, which can lead to arbitrary code execution. In essence, the attacker can manipulate the system as per their malicious intent, potentially leading to system compromise or data leakage.

Conceptual Example Code

Here is a conceptual example of a malicious HTTP request that could exploit this vulnerability:

POST /goform/setWrlBasicInfo HTTP/1.1
Host: vulnerable-tenda-o3v2-device
Content-Type: application/x-www-form-urlencoded
extChannel=AAAA...[long string of A's to overflow buffer]...

Remediation

The best course of action is to apply the patch provided by the vendor as soon as possible. This patch addresses the vulnerability and prevents its exploitation. In the meantime, until the patch can be applied, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide a temporary mitigation, monitoring and blocking any suspicious activity related to this vulnerability.

Overview

Today, we are shedding light on a critical vulnerability identified as CVE-2025-53515, which affects Advantech iView, a popular industrial internet of things (IIoT) management software. This vulnerability allows an authenticated attacker with user-level privileges to perform a SQL injection and remote code execution, leading to potential system compromise or data leakage. This high-severity vulnerability is significant because it affects a widely used IIoT platform, and successful exploitation could have serious consequences for the confidentiality, integrity, and availability of the victim’s system, data, and network.

Vulnerability Summary

CVE ID: CVE-2025-53515
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: User
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Advantech iView | All versions prior to patch

How the Exploit Works

The vulnerability resides in the NetworkServlet.archiveTrap() function of the Advantech iView software. Certain input parameters within this function are not properly sanitized, which opens up the possibility for SQL injection. An attacker with user-level credentials can craft and send malicious SQL queries in these parameters to manipulate the underlying database, leading to unauthorized disclosure, modification, or destruction of data.
Moreover, this vulnerability also allows for remote code execution in the context of the ‘nt authoritylocal service’ account. This means that an attacker can not only manipulate the database but also execute arbitrary code on the affected system with system-level privileges, potentially compromising the entire system.

Conceptual Example Code

Below is a conceptual example of how an attacker might craft a malicious HTTP request exploiting this vulnerability:

POST /NetworkServlet/archiveTrap HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"trap": "'; DROP TABLE users;--",
"code": "'; EXECUTE arbitrary_code;--"
}

In this example, the ‘trap’ parameter is manipulated with a SQL injection attack to drop the users table from the database. The ‘code’ parameter is manipulated to execute arbitrary code on the server. This is purely a conceptual example, and the actual exploit could be considerably more complex and obfuscated.

Mitigation and Prevention

The best mitigation strategy is to apply the vendor-supplied patch as soon as it becomes available. In the meantime, users can deploy a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block attempted attacks. Regularly updating and monitoring these systems can provide a crucial line of defense against exploitation. Furthermore, following the principle of least privilege and ensuring that user-level accounts have only the necessary permissions can reduce the potential impact of this vulnerability.

Overview

The Common Vulnerabilities and Exposures (CVE) system has identified a high-severity vulnerability (CVE-2025-53475) in Advantech iView. This vulnerability exposes systems to potential SQL injection attacks and remote code execution. The impact of such vulnerabilities can be significant, potentially leading to system compromise and data leakage. This vulnerability matters due to the potential damage that could occur if an attacker with at least user-level privileges successfully exploits it.

Vulnerability Summary

CVE ID: CVE-2025-53475
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: User
User Interaction: Required
Impact: System Compromise, Data Leakage

Affected Products

Product | Affected Versions

Advantech iView | All versions before the security patch

How the Exploit Works

The vulnerability exists in the Advantech iView NetworkServlet.getNextTrapPage() function, which fails to properly sanitize certain parameters. If an attacker can authenticate with at least user-level privileges, they can exploit this vulnerability to perform SQL injection attacks. This could also lead to the execution of arbitrary code in the context of the ‘nt authoritylocal service’ account, which could potentially compromise the system.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited via malicious HTTP request:

POST /NetworkServlet/getNextTrapPage HTTP/1.1
Host: target.example.com
Content-Type: application/json
Cookie: JSESSIONID=[Authenticated Session ID]
{
"trapPage": "1; DROP TABLE users --"
}

In this example, the attacker sends a malicious payload within the “trapPage” parameter. Since the application does not properly sanitize the input, it directly executes the SQL command, potentially leading to data loss or unauthorized data access.

Mitigation

The best mitigation strategy for this vulnerability is to apply the vendor-supplied patch as soon as possible. Until the patch can be applied, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may help to temporarily mitigate some of the risks associated with this vulnerability. However, these are not long-term solutions and the patch should be applied as soon as it is available.

Overview

A critical cybersecurity vulnerability, identified as CVE-2025-52577, has emerged in the Advantech iView application, posing significant threats to system security. This vulnerability could potentially allow an authenticated attacker to perform SQL injection and remote code execution, resulting in potential system compromise or data leakage. The vulnerability is notably significant due to its potential to cause severe damage if exploited, especially within enterprise networks where Advantech iView is commonly used for its robust industrial automation and control solutions.

Vulnerability Summary

CVE ID: CVE-2025-52577
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: User-level privileges
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Advantech iView | All versions prior to the latest patch

How the Exploit Works

The vulnerability originates from improper sanitization of certain input parameters in the NetworkServlet.archiveTrapRange() function of Advantech iView. An authenticated attacker with user-level privileges can exploit this vulnerability by injecting malicious SQL commands. These commands can manipulate the application’s database, enabling data leakage. Additionally, the vulnerability allows for remote code execution in the context of the ‘nt authoritylocal service’ account, which could lead to a full system compromise.

Conceptual Example Code

Below is a conceptual example of how an HTTP request carrying a malicious SQL payload might look. Note that this is a hypothetical representation and not an actual exploit code.

POST /NetworkServlet.archiveTrapRange HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"range": "1; DROP TABLE users--"
}

In this example, the “range” parameter is exploited to carry out a SQL command that drops the “users” table from the database, illustrating a potential SQL injection attack.

Mitigation Guidance

The most effective way to mitigate this vulnerability is by applying the vendor patch. Advantech has already released a patch that addresses this vulnerability, and all users are strongly advised to update their iView application to the latest version. In scenarios where immediate patching is not possible, using a web application firewall (WAF) or an intrusion detection system (IDS) can serve as a temporary mitigation measure, helping to detect and block exploit attempts. However, these are not long-term solutions and systems should be patched as soon as possible.

Overview

A critical vulnerability has been identified in Tenda O3V2 1.0.0.12(3880), a widely used networking device. This flaw, designated as CVE-2025-7419, affects the httpd component of the system and can lead to a stack-based buffer overflow, resulting in potential system compromise or data leakage. This vulnerability is especially concerning as the exploit is already publicly disclosed and can be initiated remotely, raising the urgency to address this vulnerability.

Vulnerability Summary

CVE ID: CVE-2025-7419
Severity: Critical – CVSS Severity Score 8.8
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Tenda O3V2 | 1.0.0.12(3880)

How the Exploit Works

The vulnerability lies in the manipulation of the ‘destIP’ argument in the fromSpeedTestSet function of /goform/setRateTest file. This improper input validation allows a remote attacker to trigger a stack-based buffer overflow, which can lead to arbitrary code execution. In other words, the attacker can manipulate the system as they wish, which can lead to unauthorized access, data leakage, or even total system compromise.

Conceptual Example Code

Consider the following conceptual HTTP request exploiting this vulnerability:

POST /goform/setRateTest HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
destIP=127.0.0.1%00{malicious_shellcode}

This request sends an overly long ‘destIP’ argument filled with the attacker’s malicious shellcode to the vulnerable endpoint. The ‘%00’ acts as a null terminator, effectively causing a buffer overflow and making the system execute the malicious shellcode.

Mitigation Guidance

Tenda should release a vendor patch to address this vulnerability. In the meantime, users can employ a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as temporary mitigation. These tools can detect and block malicious traffic attempting to exploit this vulnerability. Users are urged to apply the vendor patch as soon as it becomes available and regularly update their systems to protect against such vulnerabilities.

Overview

The cybersecurity landscape is continuously evolving with an increasing number of threats. One such threat that has recently been identified is a Missing Authorization vulnerability in Juniper Networks Security Director, denoted as CVE-2025-52950. This vulnerability allows an unauthenticated network-based attacker to read or tamper with multiple sensitive resources via the web interface. It affects a wide array of businesses and organizations using the Juniper Networks Security Director version 24.4.1. The severity of this issue and its potential implications, including system compromise or data leakage, make it crucial for every organization to understand and mitigate it promptly.

Vulnerability Summary

CVE ID: CVE-2025-52950
Severity: Critical (9.6 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Juniper Networks Security Director | 24.4.1

How the Exploit Works

The vulnerability stems from an issue where numerous endpoints on the Juniper Security Director appliance do not validate authorization. As a result, they deliver information to the caller that is beyond their authorization level. An attacker can exploit this vulnerability by sending a specially crafted request to the affected appliance. This will allow the attacker to access data outside their authorization level. The obtained information can then be used to gain access to additional information or perpetrate other attacks, impacting downstream managed devices.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP request which an attacker might send to the vulnerable endpoint:

GET /sensitive/endpoint HTTP/1.1
Host: target.example.com

In this scenario, an attacker sends a GET request to the sensitive endpoint, which does not validate the authorization of the request. As a result, the endpoint inappropriately returns sensitive information, allowing the attacker to gain unauthorized access.
Please note that this is a simplified representation of the exploit and certain details have been omitted for clarity. Actual exploit may vary and be more complex depending on the specific configuration and state of the targeted system.

Solution & Mitigations

The most effective mitigation for this vulnerability is to apply the vendor’s patch. Juniper Networks has provided a patch for Security Director version 24.4.1 that addresses this Missing Authorization vulnerability. Organizations are advised to apply this patch as soon as possible.
As a temporary mitigation, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to monitor network traffic and identify potential exploit attempts. However, this should not be seen as a long-term solution, as it does not address the root cause of the vulnerability.
In conclusion, CVE-2025-52950 is a critical vulnerability that requires immediate attention. Organizations are advised to apply the appropriate patches and continuously monitor their systems for any unusual activity. Cybersecurity is a continuous effort, and staying informed about the latest vulnerabilities and their mitigations is key to maintaining a secure infrastructure.