Author: Ameeba

Overview

In the realm of cybersecurity, there’s a newly discovered vulnerability that’s raising concerns among Windows users. The vulnerability, officially named CVE-2025-7619, affects BatchSignCS, a background application developed by WellChoose that’s used in various capacities on Windows platforms globally. This vulnerability matters because it can lead to a potential system compromise or data leakage, creating a serious risk for businesses and individuals alike. It’s especially worrisome because if a user visits a malicious website while the BatchSignCS application is running, remote attackers can exploit this vulnerability to write arbitrary files to any path and potentially execute arbitrary code.

Vulnerability Summary

CVE ID: CVE-2025-7619
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

BatchSignCS | All current versions

How the Exploit Works

The vulnerability lies in the BatchSignCS’s improper validation of user-supplied data. If a user visits a malicious website and a particular set of conditions are met, the BatchSignCS application can be tricked into writing files to arbitrary paths on the user’s system. This means that an attacker could create, modify, or delete any file on the system, potentially leading to arbitrary code execution if the file is associated with an executable program.

Conceptual Example Code

Here’s a conceptual example of how this vulnerability might be exploited. The attacker sends a malicious payload to the vulnerable endpoint, which is then processed by the BatchSignCS application.

GET /malicious_website HTTP/1.1
Host: attacker.com
Content-Type: application/json
{ "file_path": "C:\\Windows\\System32\\malicious_file.exe", "file_content": "BASE64_ENCODED_MALICIOUS_CODE" }

In this example, the attacker is attempting to write malicious code to the Windows System32 directory, which houses many of the operating system’s critical files. If successful, this could lead to the execution of arbitrary code with the permissions of the BatchSignCS application.

Mitigation Steps

Users are strongly urged to apply the vendor patch as soon as it is available. As an interim measure, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can help to mitigate the vulnerability. They can potentially block or alert on attempts to exploit this vulnerability, reducing the risk of a successful attack. Cybersecurity best practices such as keeping software up to date, avoiding untrusted websites, and regularly backing up data should also be followed.

Overview

The CVE-2025-7570 is a critical vulnerability discovered in UTT HiPER 840G up to version 3.1.1-190328. This vulnerability, which has been publicly disclosed, is of high concern due to its potential to compromise systems or leak sensitive data. It affects an unknown functionality of the file /goform/aspRemoteApConfTempSend and could be exploited remotely. The vendor’s lack of response to this disclosure, despite early contact, increases the urgency for users to apply the available mitigation measures.

Vulnerability Summary

CVE ID: CVE-2025-7570
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

UTT HiPER 840G | Up to 3.1.1-190328

How the Exploit Works

The vulnerability lies within a specific argument (remoteSrcTemp) of the /goform/aspRemoteApConfTempSend file. The manipulation of this argument can lead to a buffer overflow condition. Buffer overflow occurs when more data is written into a buffer than it can handle, causing an overflow of data into adjacent memory, which could potentially lead to arbitrary code execution or denial of service.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This is a basic HTTP POST request, which includes a malicious payload that could manipulate the “remoteSrcTemp” argument, causing a buffer overflow.

POST /goform/aspRemoteApConfTempSend HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
remoteSrcTemp=AAAAA...[Add large amount of A's to overflow buffer]...AAAAA

Mitigation

There is currently no patch provided by the vendor for this vulnerability. As a mitigation measure, it is recommended to utilize a Web Application Firewall (WAF) or Intrusion Detection Systems (IDS). These can help detect and block attempts to exploit this vulnerability. However, it is advised to continue monitoring any updates from the vendor regarding a potential patch.

Overview

A critical vulnerability, identified as CVE-2025-7551, has been discovered in the Tenda FH1201 1.2.0.14(408) router. This flaw is particularly dangerous as it affects the PPTP VPN functionality of the device, a feature that is frequently used by remote workers or businesses with multiple locations. The vulnerability allows remote manipulation of the username argument to cause a stack-based buffer overflow, potentially leading to system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-7551
Severity: Critical (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage upon successful exploitation.

Affected Products

Product | Affected Versions

Tenda FH1201 | 1.2.0.14(408)

How the Exploit Works

The vulnerability resides in the ‘fromPptpUserAdd’ function of the /goform/PPTPDClient file. An attacker can manipulate the ‘modino/username’ argument to overflow the buffer. This overflow could potentially allow the attacker to execute arbitrary code or cause a denial of service through a crafted HTTP request. The vulnerability can be exploited remotely, without any need for user interaction or privileges.

Conceptual Example Code

This is a conceptual example of how the vulnerability might be exploited. An attacker makes an HTTP POST request with a larger than expected ‘username’ value to trigger the buffer overflow.

POST /goform/PPTPDClient?modino/username=AAAAAAAAAA... HTTP/1.1
Host: target-router-ip
Content-Type: application/x-www-form-urlencoded
username=AAAAAAAAAA...&password=attacker-password

In this example, ‘AAAAAAAAAA…’ represents an excessively long string designed to overflow the buffer and potentially lead to arbitrary code execution.

Mitigation Guidance

Owners of affected Tenda FH1201 routers are advised to apply the vendor patch as soon as possible to fix this vulnerability. In the absence of a patch, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used as a temporary measure to mitigate the risk. However, these are not failsafe solutions and the patch should be applied as soon as it becomes available. Regularly updating and patching your devices is the most effective way to protect against such vulnerabilities.

Overview

A critical vulnerability, identified as CVE-2025-7550, has been discovered in Tenda’s FH1201 1.2.0.14(408) firmware. This vulnerability, if exploited, could potentially lead to a system compromise or data leakage. It resides in the function fromGstDhcpSetSer of the file /goform/GstDhcpSetSer and can be triggered remotely through the improper handling of the argument ‘dips. As Tenda routers are widely used, this vulnerability could potentially impact a large number of users and systems.

Vulnerability Summary

CVE ID: CVE-2025-7550
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

Tenda FH1201 | 1.2.0.14(408)

How the Exploit Works

This vulnerability is a stack-based buffer overflow issue. It occurs when the fromGstDhcpSetSer function of the /goform/GstDhcpSetSer file in the Tenda FH1201 1.2.0.14(408) firmware fails to properly validate the length of user-supplied data before copying it to a fixed-length, stack-based buffer. This flaw could allow an attacker to overwrite the buffer’s content with arbitrary malicious data, potentially leading to the execution of unauthorized code or commands.

Conceptual Example Code

An attacker could exploit this vulnerability by sending a specially crafted HTTP request that contains an oversized ‘dips’ argument. Here’s a simplified, conceptual example of how such an HTTP request might look:

POST /goform/GstDhcpSetSer HTTP/1.1
Host: vulnerable-router
Content-Type: application/x-www-form-urlencoded
dips=<malicious_payload>

In this example, “ would be a string that is long enough to overflow the stack-based buffer in the vulnerable function.

Mitigation and Prevention

Users are advised to apply the vendor-provided patch as soon as possible. If the patch cannot be applied immediately, users can protect themselves by deploying a web application firewall (WAF) or an intrusion detection system (IDS) that can detect and block attempts to exploit this vulnerability. However, these are only temporary measures and the ultimate solution is to apply the vendor’s patch.

Overview

The cybersecurity community has recently identified a severe vulnerability, CVE-2025-7451, in iSherlock, a product developed by Hgiga. This security vulnerability has far-reaching implications as it allows unauthorized remote attackers to inject arbitrary OS commands which are then executed on the server. Given the severity of the potential impact, which ranges from system compromise to data leakage, it is essential that users of iSherlock understand the risks and take immediate action to mitigate this security flaw.

Vulnerability Summary

CVE ID: CVE-2025-7451
Severity: Critical (CVSS: 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

iSherlock | All versions prior to the patch

How the Exploit Works

The vulnerability lies within the command execution function of iSherlock. Unauthenticated remote attackers can exploit this vulnerability by sending specially crafted requests to the server. The server unwittingly processes these requests, leading to arbitrary OS command injection and execution. This could potentially compromise the entire system, leading to unauthorized access, data exfiltration, and other malicious activities.

Conceptual Example Code

The following conceptual code demonstrates how an attacker might exploit this vulnerability:

POST /target_endpoint HTTP/1.1
Host: vulnerable.server.com
Content-Type: application/json
{ "command": "; rm -rf /" }

In this example, the attacker sends a JSON payload containing an arbitrary OS command (`; rm -rf /`) within a regular command. The server misinterprets this as a legitimate command, resulting in the execution of the malicious command. In this case, the `rm -rf /` command would delete all files in the server’s root directory, causing severe damage.

Mitigation Guidance

To mitigate this vulnerability, users are urged to apply the vendor patch provided by Hgiga as soon as possible. If immediate patching is not feasible, using a Web Application Firewall (WAF) or Intrusion Detection Systems (IDS) to detect and block malicious requests can serve as a temporary mitigation strategy. However, this does not remove the vulnerability and patching should still be done as soon as possible. Regularly updating and patching software is a fundamental part of maintaining a secure digital environment.

Overview

A critical vulnerability, designated as CVE-2025-7549, has been identified in the Tenda FH1201 router firmware version 1.2.0.14(408). This vulnerability lies in the frmL7ProtForm function of the /goform/L7Prot file, and its manipulation can lead to a stack-based buffer overflow. This issue is of significant concern because it can potentially compromise the system and lead to data leakage.
This vulnerability is particularly alarming due to its potential to be exploited remotely, thereby posing a threat to anyone using the affected version of this firmware. The exploit has been publicly disclosed, increasing the likelihood of its use by malicious actors.

Vulnerability Summary

CVE ID: CVE-2025-7549
Severity: Critical (CVSS 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise, data leakage

Affected Products

Product | Affected Versions

Tenda FH1201 | 1.2.0.14(408)

How the Exploit Works

The vulnerability revolves around the manipulation of the ‘page’ argument in the frmL7ProtForm function of the /goform/L7Prot file. By sending a specially crafted request, an attacker can trigger a stack-based buffer overflow. This overflow can lead to arbitrary code execution on the device, allowing the attacker to potentially take full control of the system.

Conceptual Example Code

Below is a conceptual example of how this vulnerability might be exploited. Please note that this is a hypothetical scenario for understanding purposes and not a real exploit code.

POST /goform/L7Prot HTTP/1.1
Host: vulnerable-router-ip
Content-Type: application/x-www-form-urlencoded
page=1&malicious_payload=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

In this example, the ‘page’ parameter is followed by a long string of ‘A’s, which is longer than the buffer can handle. This would overwrite the stack, causing a buffer overflow that could potentially allow the attacker to execute arbitrary code.

Mitigation Guidance

The ideal solution to this vulnerability is to apply the vendor patch when it becomes available. In the interim, users can use Web Application Firewalls (WAFs) or Intrusion Detection Systems (IDS) to identify and block attempts to exploit this vulnerability. Furthermore, it is recommended to restrict access to the affected router to trusted networks and users only.

Overview

A critical vulnerability, officially designated as CVE-2025-7548, has been discovered in the Tenda FH1201 1.2.0.14(408). This exploit affects the function formSafeEmailFilter of the file /goform/SafeEmailFilter. The vulnerability exposes a serious risk to all users of the affected product, due to the potential for remote initiation of an attack that could lead to a system compromise or data leakage. Given the critical severity classification, the immediate application of mitigating measures is recommended to minimize potential risks.

Vulnerability Summary

CVE ID: CVE-2025-7548
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

Tenda FH1201 | 1.2.0.14(408)

How the Exploit Works

The exploitation of this vulnerability involves the manipulation of the argument ‘page’ within the function formSafeEmailFilter. This manipulation triggers a stack-based buffer overflow condition. A buffer overflow occurs when more data is written into a buffer than it can handle, causing the excess data to overflow into adjacent memory spaces. This can lead to unpredictable program behavior, including memory access errors, incorrect results, program termination (a crash), or a breach of system security. In this case, an attacker could use this vulnerability to execute arbitrary code, compromising the system or causing data leakage.

Conceptual Example Code

Below is a
conceptual
example of how the vulnerability might be exploited. This is a sample HTTP request that may be used to trigger the buffer overflow condition:

POST /goform/SafeEmailFilter HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
page=A*5000

In this example, ‘A*5000’ represents a string of 5000 ‘A’ characters. If the implementation of ‘formSafeEmailFilter’ function does not properly limit or check the size of the ‘page’ argument, this could cause a buffer overflow condition.

Mitigation Guidance

To mitigate this vulnerability, it is recommended to apply the vendor patch as soon as it is available. In the meantime, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as temporary mitigation. These systems can help detect and prevent exploitation attempts. Always ensure your systems are updated regularly and security best practices are followed to prevent exploitation of such vulnerabilities.

Overview

The cybersecurity landscape is constantly evolving, with new vulnerabilities being discovered on a regular basis. The latest critical vulnerability to be uncovered is CVE-2025-7544, which affects Tenda AC1206 software version 15.03.06.23. This vulnerability is of particular concern due to its severity rating of 8.8, indicating that it’s capable of causing significant harm. The vulnerability lies in the function formSetMacFilterCfg of the file /goform/setMacFilterCfg and can be exploited remotely, making it a major security risk for any system running the affected software.

Vulnerability Summary

CVE ID: CVE-2025-7544
Severity: Critical (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

Tenda AC1206 | 15.03.06.23

How the Exploit Works

The CVE-2025-7544 exploit takes advantage of a stack-based buffer overflow vulnerability present in the formSetMacFilterCfg function of the file /goform/setMacFilterCfg in Tenda AC1206. By manipulating the argument deviceList, an attacker can trigger the buffer overflow, which can lead to undefined behavior such as code execution, crashes, or data leakage. The exploit can be initiated remotely, which means an attacker does not need physical access to the vulnerable system.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This is a simplified representation and actual exploit may vary.
“`http
POST /goform/setMacFilterCfg HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
deviceList=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

Overview

A critical vulnerability, identified as CVE-2025-7532, has been discovered in Tenda FH1202 1.2.0.14(408). This vulnerability affects a crucial function within the device’s firmware potentially compromising system security and leading to data leakage. Given the severity of the vulnerability, it has been rated as critical and holds a high CVSS score of 8.8. This vulnerability poses a significant risk to individuals or organizations using the affected Tenda product, as it can lead to unauthorized access, system compromise, and data leakage.

Vulnerability Summary

CVE ID: CVE-2025-7532
Severity: Critical (CVSS: 8.8)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Tenda FH1202 | 1.2.0.14(408)

How the Exploit Works

The vulnerability lies within the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. It is a stack-based buffer overflow vulnerability that can be exploited by manipulating the ‘page’ argument. An attacker can initiate the attack remotely by sending a specially crafted request to the vulnerable function. If successful, this can lead to arbitrary code execution, allowing the attacker to gain unauthorized access to the system and potentially lead to data leakage.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited. This is not a real exploit code, but a representation of how an attacker might craft a malicious request to exploit the vulnerability.

GET /goform/webExcptypemanFilter?page= [insert malicious payload here] HTTP/1.1
Host: target.example.com

Mitigation Guidance

Until a patch is available from the vendor, it is recommended to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation measure. Both these systems can help detect and prevent the exploitation of the vulnerability by monitoring network traffic and blocking suspicious activities. However, these are temporary solutions and can only minimize the risk, not eliminate it entirely. Therefore, it is crucial to apply the vendor-provided patch as soon as it becomes available.

Overview

Recently, a critical vulnerability has been identified in Tenda FH1202 1.2.0.14(408) potentially placing a multitude of systems at significant risk. This vulnerability, designated as CVE-2025-7531, affects the function fromPptpUserSetting of the file /goform/PPTPUserSetting. The severity of this vulnerability cannot be understated as it allows remote attackers to execute a stack-based buffer overflow attack. This type of attack can lead to system compromise, data leakage, and other severe consequences.

Vulnerability Summary

CVE ID: CVE-2025-7531
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Tenda FH1202 | 1.2.0.14(408)

How the Exploit Works

The vulnerability resides in the function fromPptpUserSetting of the file /goform/PPTPUserSetting. Specifically, the manipulation of the argument delno can lead to a stack-based buffer overflow. This occurs when data is written into a buffer – or temporary data storage area – and it exceeds the buffer’s capacity. The excess data can corrupt data values in memory addresses adjacent to the buffer, leading to erratic program behavior, including memory access errors, incorrect results, program termination (a crash), or a breach of system security.

Conceptual Example Code

Given the nature of this vulnerability, a potential exploit might look as follows:
“`http
POST /goform/PPTPUserSetting HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
delno=111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111