Overview
CVE-2025-5735 is a critical vulnerability found in TOTOLINK X15 1.0.0-B20230714.1105. The vulnerability arises from an unknown processing of the file /boafrm/formSetLg of the HTTP POST Request Handler component. It is of critical importance due to its potential to cause system compromise or data leakage, thereby posing a major threat to the security of the affected systems. The vulnerability is even more concerning as the exploit has been publicly disclosed, increasing the chances of it being utilized by malicious actors.
Vulnerability Summary
CVE ID: CVE-2025-5735
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
TOTOLINK X15 | 1.0.0-B20230714.1105
How the Exploit Works
The vulnerability stems from a buffer overflow condition that exists within the file /boafrm/formSetLg of the HTTP POST Request Handler component in TOTOLINK X15. The overflow occurs due to the improper handling of the ‘submit-url’ argument by the system. When a malicious actor sends a specially crafted HTTP POST request with an excessively long ‘submit-url’ argument, it triggers the overflow. This can potentially allow the attacker to execute arbitrary code on the system or cause a denial of service.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited:
POST /boafrm/formSetLg HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
submit-url=<overly-long-string>In the above example, `
Mitigation Guidance
Users of the affected product are urged to apply the vendor patch as soon as possible to mitigate the risk. In cases where the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation strategy. These tools can help detect and block attempts to exploit this vulnerability. However, these are just temporary solutions, and applying the vendor patch is the most effective way to address this vulnerability.