CVE-2025-6953
Published: 01 July 2025
Summary
CVE-2025-6953 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Totolink A3002Ru Firmware. Its CVSS base score is 7.4 (High).
Operationally, 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 A3002RU router running firmware 3.0.0-B20230809.1615. The flaw resides in an unknown function within the file /boafrm/formParentControl of the HTTP POST Request Handler component, where improper handling of the submit-url argument allows an attacker to overflow a buffer. The issue is tracked under CWE-119 and CWE-120 and carries a CVSS 4.0 score of 7.4.
An authenticated remote attacker can send a crafted HTTP POST request to trigger the overflow. Successful exploitation grants the attacker control over the device with impacts to confidentiality, integrity, and availability, and a publicly available proof-of-concept has already been released.
Public references consist of a detailed disclosure and PoC on GitHub together with entries in the Vuldb database; no vendor advisory or patch information is referenced in these sources. The associated EPSS score remains low, moving only from 0.0136 to a peak of 0.0137, indicating limited observed exploitation interest to date.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-19619
Vulnerability details
A vulnerability, which was classified as critical, was found in TOTOLINK A3002RU 3.0.0-B20230809.1615. Affected is an unknown function of the file /boafrm/formParentControl of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. It…
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is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
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.