CVE-2025-6149
Published: 17 June 2025
Summary
CVE-2025-6149 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Totolink A3002R Firmware. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 19.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
A critical buffer overflow vulnerability exists in the TOTOLINK A3002R router running firmware 4.0.0-B20230531.1404. The flaw is located in an unknown function of the /boafrm/formSysLog endpoint within the HTTP POST Request Handler component. Manipulation of the submit-url argument can trigger the overflow, which is tracked under CWE-119 and CWE-120 and carries a CVSS 4.0 score of 7.4.
An authenticated attacker can exploit the issue remotely by submitting a crafted HTTP POST request to the affected endpoint. Successful exploitation may allow the attacker to execute arbitrary code or crash the device, and a proof-of-concept has already been published.
Public references consist of a GitHub repository containing exploit details and multiple Vuldb entries; no vendor advisory or patch information is referenced in the available sources. The associated EPSS score remains low at approximately 0.0136 with negligible change from its recorded peak.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-18454
Vulnerability details
A vulnerability classified as critical has been found in TOTOLINK A3002R 4.0.0-B20230531.1404. Affected is an unknown function of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It is…
more
possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in the public-facing HTTP POST handler (/boafrm/formSysLog) of the TOTOLINK A3002R router web interface enables remote exploitation for initial access, directly mapping to Exploit Public-Facing Application.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Managed runtimes used by platform-independent applications (e.g., JVM, CLR) enforce memory safety, preventing most buffer overflows that require direct memory manipulation.
Ongoing control assessments and code testing (static/dynamic analysis, fuzzing) surface memory buffer restriction failures, which are then remediated before release.
Memory protections (e.g., W^X, ASLR) make exploitation of buffer-boundary violations far harder to turn into code execution.
Detects exploitation attempts that produce memory corruption, crashes, or anomalous behavior.