Author: Ameeba

CVE-2025-8244: Critical Buffer Overflow Vulnerability in TOTOLINK X15
Overview

A critical vulnerability, CVE-2025-8244, has been discovered in TOTOLINK X15 1.0.0-B20230714.1105. This vulnerability poses a serious threat to the integrity, confidentiality, and availability of the affected systems. As the vulnerability is found in a commonly used router, it has the potential to impact a large number of users globally. The severity of this vulnerability lies in its ability to be exploited remotely, with the potential for system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-8244
Severity: Critical (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

TOTOLINK X15 | 1.0.0-B20230714.1105

How the Exploit Works

The exploit takes advantage of a buffer overflow vulnerability within an unknown function of the file /boafrm/formMapDelDevice in the HTTP POST request handler component of the TOTOLINK X15. Specifically, it involves the improper handling and validation of the argument ‘macstr. An attacker can manipulate this argument to cause a buffer overflow condition, potentially leading to arbitrary code execution.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited:
```
POST /boafrm/formMapDelDevice HTTP/1.1
Host: vulnerable-router-ip
Content-Type: application/x-www-form-urlencoded
macstr=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA... [continue until buffer overflow is triggered]
```
This example is oversimplified for illustrative purposes. In a real attack scenario, the ‘A’ characters would typically be replaced with carefully crafted input designed to execute arbitrary commands or code.

Mitigation

Users are recommended to apply the vendor patch as soon as possible to mitigate this vulnerability. In the absence of a patch, users may employ Web Application Firewalls (WAF) or Intrusion Detection Systems (IDS) as temporary mitigation measures. However, these should be seen as temporary solutions, as they may not fully protect against all potential attack vectors related to this vulnerability. For comprehensive protection, the vendor-supplied patch should be applied.
August 2, 2025
CVE-2025-8243: Critical Buffer Overflow Vulnerability in TOTOLINK X15 HTTP POST Request Handler

Overview

A critical vulnerability, identified as CVE-2025-8243, has been unearthed in the TOTOLINK X15 1.0.0-B20230714.1105, affecting the HTTP POST request handler component. This vulnerability, caused by an unknown processing of the file /boafrm/formMapDel, is of significant concern due to its severity and the potential for remote execution. Given the widespread use of TOTOLINK products, this vulnerability could have far-reaching implications, potentially enabling malicious actors to compromise systems or leak sensitive information.

Vulnerability Summary

CVE ID: CVE-2025-8243
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

TOTOLINK X15 | 1.0.0-B20230714.1105

How the Exploit Works

The vulnerability lies in the HTTP POST request handler’s processing of the file /boafrm/formMapDel. By manipulating the argument ‘devicemac1’, an attacker can trigger a buffer overflow condition. This condition can lead to unpredictable system behavior, including system crashes, data corruption, or potentially allowing an attacker to execute arbitrary code.

Conceptual Example Code

Below is a conceptual example of how this vulnerability might be exploited. This is a sample POST request, where the ‘devicemac1’ argument is manipulated with a maliciously crafted value to induce a buffer overflow.
“`http
POST /boafrm/formMapDel HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
devicemac1=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

August 2, 2025
CVE-2025-6918: Critical SQL Injection Vulnerability in Ncvav Virtual PBX Software
Overview

We’re diving into the details of a critical SQL Injection vulnerability identified as CVE-2025-6918. This flaw is found in Ncvav’s Virtual PBX Software, a widely used system in many organizations for their telecommunication needs. The risk this vulnerability presents is significant, as it opens up potential for system compromise and data leakage, which could lead to devastating consequences for any business.
The importance of understanding and mitigating this vulnerability cannot be overstated. According to the Common Vulnerability Scoring System (CVSS), it has a Severity Score of 9.8, indicating its critical nature. In the cybersecurity world, anything above 7 is considered high risk, so this score tells us that immediate attention and action are required.

Vulnerability Summary

CVE ID: CVE-2025-6918
Severity: Critical (CVSS: 9.8)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: System compromise or data leakage

Affected Products

Product | Affected Versions

Virtual PBX Software | Before 09.07.2025

How the Exploit Works

The vulnerability stems from the software’s improper neutralization of special elements used in an SQL command. This failure allows an attacker to manipulate SQL queries in the software’s database by injecting malicious SQL code. The attacker can then potentially gain unauthorized access to sensitive data or even execute commands in the system. Given the nature of PBX systems, this could compromise sensitive information like call records, voicemails, or even system configurations.

Conceptual Example Code

Below is a
conceptual
example of how the vulnerability might be exploited. This could be a malicious SQL command hidden within a seemingly harmless request to the system.
```
POST /pbx/api/request HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
username=admin&password=123456' OR '1'='1'; --
```
In the above example, the attacker is attempting to log in with a username of “admin” and a password that includes an SQL injection. The “‘ OR ‘1’=’1′; –” portion of the command is the SQL injection, which will always evaluate to true, potentially granting the attacker unauthorized access.

How to Mitigate CVE-2025-6918

The most effective way to mitigate this vulnerability is to apply the vendor’s patch. Ncvav has already released a patch for this critical issue for versions of Virtual PBX Software from 09.07.2025 onwards.
In cases where immediate patching is not feasible, deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation method. These systems can help by detecting and blocking SQL Injection attempts. However, they should not be used as a long-term solution in place of patching the system. Regular updates and patches are essential for maintaining a secure cybersecurity infrastructure.
August 2, 2025
CVE-2025-8242: Critical Buffer Overflow Vulnerability in TOTOLINK X15
Overview

One of the most significant vulnerabilities in recent times, CVE-2025-8242, is a critical buffer overflow vulnerability found in TOTOLINK X15 1.0.0-B20230714.1105. This vulnerability can affect any system that is using the affected versions of TOTOLINK X15. Buffer overflow vulnerabilities are severe and can potentially lead to system compromise or data leakage. Given the widespread use of TOTOLINK X15, this vulnerability has the potential to impact a large number of systems globally.

Vulnerability Summary

CVE ID: CVE-2025-8242
Severity: Critical, CVSS Score 8.8
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

TOTOLINK X15 | 1.0.0-B20230714.1105

How the Exploit Works

The exploit works by manipulating the arguments ‘ip6addr’, ‘url’, ‘vpnPassword’, or ‘vpnUser’ in the HTTP POST request handler. This manipulation leads to a buffer overflow within the system. Buffer overflows occur when the volume of data exceeds the storage capacity of the buffer, causing the extra information to overflow into adjacent storage spaces. This overflow can overwrite other relevant data on the system, corrupting valid data and leading to erratic system behavior or even system crashes.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited using a malicious HTTP POST request:
```
POST /boafrm/formFilter HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
ip6addr=2001:0db8:85a3:0000:0000:8a2e:0370:7334&url=http://malicious.example.com&vpnPassword=overflownData&vpnUser=admin
```
In the above example, the ‘vpnPassword’ parameter is filled with an excessive amount of data which could potentially overflow the buffer and corrupt the system’s memory. The attacker could exploit this corrupted memory to execute arbitrary code or cause a denial of service.

Mitigation Guidance

The recommended mitigation for this vulnerability is to apply the vendor patch as soon as it becomes available. In the meantime, using a web application firewall (WAF) or intrusion detection system (IDS) could provide temporary mitigation. These systems can identify and block malicious HTTP requests, preventing attackers from exploiting this vulnerability. However, these are just temporary measures, and the vendor’s patch should be applied as soon as possible to fully secure the system.
August 2, 2025
CVE-2025-8184: Critical Stack-Based Buffer Overflow Vulnerability in D-Link DIR-513
Overview

This blog post will look into a critical vulnerability, CVE-2025-8184, which affects D-Link DIR-513 up to version 1.10. This vulnerability has potentially severe implications for data security and system integrity, especially considering the fact that it is remotely executable and the exploit has been disclosed to the public. This issue is of significant concern for users of the affected products, which, unfortunately, are no longer supported by their manufacturers.

Vulnerability Summary

CVE ID: CVE-2025-8184
Severity: Critical (8.8 / 10 on the CVSS scale)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

D-Link DIR-513 | Up to 1.10

How the Exploit Works

The vulnerability lies in the HTTP POST request handler component of D-Link DIR-513, specifically within the function formSetWanL2TPcallback of the file /goform/formSetWanL2TPtriggers. An attacker can exploit this vulnerability by manipulating the HTTP POST request, which leads to a stack-based buffer overflow. This overflow can potentially lead to unauthorized execution of code, allowing for system compromise and potential data leakage.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited. This example represents a malicious HTTP request that could potentially trigger a buffer overflow:
```
POST /goform/formSetWanL2TPtriggers HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
data=OVERLY_LONG_STRING_THAT_CAUSES_BUFFER_OVERFLOW
```
In this example, the OVERLY_LONG_STRING_THAT_CAUSES_BUFFER_OVERFLOW would be replaced with an actual string that’s longer than the buffer can handle, causing it to overflow and potentially allowing arbitrary code execution.

Steps to Mitigate

Given that the affected products are no longer supported by D-Link, applying a vendor patch is not an option. However, employing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation against this vulnerability. It’s also recommended to replace unsupported devices with current, supported ones whenever possible to maintain a secure network environment.
August 1, 2025
CVE-2025-8180: Critical Buffer Overflow Vulnerability in Tenda CH22 1.0.0.1
Overview

A critical vulnerability, identified as CVE-2025-8180, has been found in the Tenda CH22 1.0.0.1. This vulnerability targets the formdeleteUserName function of the file /goform/deleteUserName via the manipulation of the argument old_account, leading to a buffer overflow condition. This issue is especially troubling as it allows for remote attacks, potentially leading to system compromise or data leakage. The exploit has already been publicly disclosed and may be in active use, making it a significant threat to any individual or organization using the affected version of the software.

Vulnerability Summary

CVE ID: CVE-2025-8180
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, potential data leakage

Affected Products

Product | Affected Versions

Tenda CH22 | 1.0.0.1

How the Exploit Works

The vulnerability occurs due to inadequate input validation in the formdeleteUserName function of the /goform/deleteUserName file. This allows an attacker to manipulate the old_account argument, creating a buffer overflow condition. This condition can allow the attacker to execute arbitrary code on the system, which could potentially compromise the system or lead to unauthorized access to sensitive data.

Conceptual Example Code

In a real-world example, an attacker might use a POST request to target the vulnerability. The malicious request might look something like this:
```
POST /goform/deleteUserName HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
old_account=<buffer_overflow_payload>
```
In this example, “ represents a string of data designed to trigger the buffer overflow condition. This payload would be carefully crafted by the attacker to exploit the buffer overflow vulnerability, potentially allowing the attacker to execute arbitrary code on the system.

Mitigation Guidance

The best course of action for mitigating this vulnerability is to apply the vendor patch as soon as it becomes available. If applying the patch isn’t immediately possible, implementing a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can offer a temporary solution to mitigate the risk posed by this vulnerability. It is also advisable to always be vigilant about the security of the system by regularly updating and patching the software.
August 1, 2025
CVE-2025-8178: Critical Heap-based Buffer Overflow Vulnerability in Tenda AC10
Overview

Recent cybersecurity findings have revealed a critical vulnerability, classified as CVE-2025-8178, impacting Tenda AC10 routers. This vulnerability lies in an unidentified function of the /goform/RequestsProcessLaid file, where argument manipulation can lead to a heap-based buffer overflow. As Tenda AC10 routers are commonly used in both residential and commercial settings, this vulnerability has significant implications. If exploited, it can potentially compromise systems or lead to significant data leakage.

Vulnerability Summary

CVE ID: CVE-2025-8178
Severity: Critical (8.8 CVSS Score)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Tenda AC10 | 16.03.10.13

How the Exploit Works

The vulnerability exploits a flaw in the argument processing of the /goform/RequestsProcessLaid function of the Tenda AC10 router. Specifically, the manipulation of the argument ‘device1D’ results in a heap-based buffer overflow. This type of overflow happens when more data is written into a block of memory, or buffer, than it is designed to hold. Attackers can then overwrite adjacent memory locations, potentially leading to arbitrary code execution, system crashes, or data leakage.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited. This is a hypothetical HTTP POST request that provides an overly long ‘device1D’ argument, leading to buffer overflow:
```
POST /goform/RequestsProcessLaid HTTP/1.1
Host: target_router_IP
Content-Type: application/x-www-form-urlencoded
device1D=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...[continue until buffer overflow]
```
Note: The ‘A’ character is commonly used in demonstrating buffer overflows as it is easy to spot in memory dumps.

Mitigation Guidance

Users are advised to apply the vendor’s patch to fix the vulnerability as soon as possible. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. These security measures can help monitor network traffic and block any suspicious activities that may exploit the vulnerability.
August 1, 2025
CVE-2025-8170: Remote Buffer Overflow Vulnerability in TOTOLINK T6
Overview

The cybersecurity industry has recently witnessed another critical vulnerability, CVE-2025-8170, that poses significant risk to TOTOLINK T6 routers. This vulnerability affects the ‘tcpcheck_net’ function of the file ‘/router/meshSlaveDlfw’ in the MQTT Packet Handler component. With the potential to compromise systems or lead to data leakage, this vulnerability has been classified as critical. It is noteworthy that this flaw can be exploited remotely, and thus, it requires immediate attention from network administrators and security teams managing TOTOLINK T6 routers.

Vulnerability Summary

CVE ID: CVE-2025-8170
Severity: Critical (8.8 CVSS Severity Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage

Affected Products

Product | Affected Versions

TOTOLINK T6 | 4.1.5cu.748_B20211015

How the Exploit Works

The exploit revolves around the manipulation of the ‘serverIp’ argument in the ‘tcpcheck_net’ function. The ‘serverIp’ argument is not properly validated, which allows a remote attacker to send a specially crafted MQTT packet causing a buffer overflow condition. This can lead to arbitrary code execution, potentially allowing the attacker to take control of the system or cause data leakage.

Conceptual Example Code

The vulnerability might be exploited with a malicious MQTT packet. Here is a conceptual representation of such an exploit:
```
POST /router/meshSlaveDlfw HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "serverIp": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA..." }
```
In this conceptual example, “AAAAAAAA…” represents an overly long string that causes a buffer overflow. This is a simplified representation for illustrative purposes, and a real exploit would likely use more complex data to achieve code execution.

Mitigation Guidance

Users of TOTOLINK T6 routers are advised to apply the vendor patch as soon as it is available. Until then, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation. Regularly monitoring network traffic for any signs of abnormal activity can also help in early detection and prevention of an exploit.
Please note that this is a high-severity vulnerability. Prompt action is required to protect your systems and data from potential breaches.
August 1, 2025
CVE-2025-8169: Buffer Overflow Vulnerability in D-Link DIR-513 1.10
Overview

The cybersecurity world is once again on high alert following the discovery of a critical vulnerability in D-Link DIR-513 1.10. This vulnerability, identified as CVE-2025-8169, potentially impacts millions of users worldwide, and is particularly concerning given that the affected products are no longer supported by the maintainer. Due to its severity and the possible consequences of exploitation, understanding and mitigating this vulnerability is of utmost importance for all users of the affected products.

Vulnerability Summary

CVE ID: CVE-2025-8169
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

D-Link DIR-513 | 1.10

How the Exploit Works

The vulnerability stems from a buffer overflow in the HTTP POST Request Handler of the D-Link DIR-513 1.10. By manipulating the ‘curTime’ argument in the ‘formSetWanPPTPcallback’ function of the ‘/goform/formSetWanPPTPpath’ file, an attacker can overflow the buffer, causing the system to act unpredictably or crash. This can potentially provide an attacker with unauthorized access to the system, leading to system compromise and data leakage.

Conceptual Example Code

Here’s a conceptual example of a malicious HTTP POST request that may exploit this vulnerability:
```
POST /goform/formSetWanPPTPpath HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
curTime=1234567...[continue until buffer overflow]
```
In this example, the ‘curTime’ argument is filled with a large amount of data, likely far exceeding the buffer’s capacity, leading to a buffer overflow. This could potentially crash the system or enable the attacker to execute arbitrary code, depending on the specific implementation of the buffer.

Mitigation Guidance

Unfortunately, as the affected product is no longer supported by D-Link, no official patches will be released to address this vulnerability. As a temporary measure, users can deploy a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and prevent exploitation attempts. However, given the severity of this vulnerability, the most secure course of action would be to replace the affected routers with more recent, supported models.
August 1, 2025
CVE-2025-8168: Critical Buffer Overflow Vulnerability in D-Link DIR-513 1.10
Overview

The cybersecurity landscape is a minefield of vulnerabilities, each with the potential to wreak havoc if not properly addressed. One such vulnerability, discovered in the D-Link DIR-513 1.10, poses a significant threat to out-of-support products. The vulnerability is cataloged under the identifier CVE-2025-8168 and has been given a critical severity rating. This is due to its potential for remote exploitation, leading to system compromise or data leakage. It is crucial for all users and system administrators of affected products to understand the risks associated with this vulnerability and take immediate action to mitigate its potential impact.

Vulnerability Summary

CVE ID: CVE-2025-8168
Severity: Critical (CVSS Score: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

D-Link DIR-513 | 1.10

How the Exploit Works

The vulnerability arises from a buffer overflow condition within the websAspInit function of the /goform/formSetWanPPPoE file. Specifically, the manipulation of the ‘curTime’ argument can lead to this overflow. Buffer overflows occur when more data is written into a buffer than it can handle, leading to the corruption of adjacent memory spaces. This vulnerability is particularly dangerous because it can be remotely exploited, offering an attacker the ability to execute arbitrary code on the affected system.

Conceptual Example Code

To provide a basic understanding of how this vulnerability might be exploited, consider the following conceptual HTTP request. This is not an actual exploit, but rather a demonstration of how the ‘curTime’ argument could be manipulated to trigger a buffer overflow.
```
POST /goform/formSetWanPPPoE HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
curTime=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
```
In this example, the ‘curTime’ argument is overfilled with the letter ‘A’, which could potentially cause a buffer overflow in systems vulnerable to CVE-2025-8168.

Mitigation Guidance

To protect against this vulnerability, it is recommended to apply the vendor-supplied patch. In cases where this is not possible, such as when products are no longer supported by the manufacturer, deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can offer temporary mitigation. These solutions can help detect and block attempts to exploit this vulnerability. However, they should not be considered a long-term solution. Users and system administrators are strongly urged to update or replace affected products as soon as possible to ensure the security of their networks.
August 1, 2025