CVE-2025-6145
Published: 16 June 2025
Summary
CVE-2025-6145 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Totolink Ex1200T 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 vulnerability classified as critical exists in the TOTOLINK EX1200T firmware version 4.1.2cu.5232_B20210713. It resides in an unknown function of the file /boafrm/formSysLog within the HTTP POST Request Handler component. The flaw is triggered by manipulating the submit-url argument, resulting in a buffer overflow condition tracked under CWE-119 and CWE-120.
The issue can be exploited remotely by an attacker with low privileges and without user interaction. Successful exploitation yields high impact on confidentiality, integrity, and availability, allowing an adversary to potentially execute arbitrary code or crash the affected device. A proof-of-concept has been publicly disclosed on GitHub.
No official vendor advisory or patch information is referenced in the available sources. The EPSS score remains low and essentially flat, with a current value of 0.0136 and a peak of 0.0137, indicating limited observed exploitation interest following disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-18426
Vulnerability details
A vulnerability was found in TOTOLINK EX1200T 4.1.2cu.5232_B20210713 and classified as critical. Affected by this issue is some unknown functionality of the file /boafrm/formSysLog of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer…
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overflow. The attack may be launched 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?
Remote buffer overflow in the router's HTTP POST handler (/boafrm/formSysLog) via submit-url argument enables exploitation of a public-facing web application and remote service for potential RCE.
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.