CVE-2024-12343
Published: 08 December 2024
Summary
CVE-2024-12343 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tp-Link Vn020 F3V Firmware. Its CVSS base score is 7.1 (High).
Operationally, ranked in the top 9.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A buffer overflow vulnerability exists in the TP-Link VN020 F3v(T) TT_V6.2.1021 router, specifically within an unknown function of the /control/WANIPConnection file in the SOAP Request Handler component. The flaw is triggered by manipulation of the NewConnectionType argument and is tracked under CWE-119 and CWE-120. It received a CVSS 4.0 score of 7.1 and was published on 2024-12-08.
The attack can be carried out by an unauthenticated adversary on the local network, resulting in a high impact on availability while leaving confidentiality and integrity unaffected. A working exploit has already been made public.
Public references include a detailed proof-of-concept on GitHub along with entries on VulDB and the vendor site, though no specific patch or mitigation guidance is described in the available information. The associated EPSS score remains low, moving only from 0.0615 to a peak of 0.0785.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-50788
Vulnerability details
A vulnerability classified as critical has been found in TP-Link VN020 F3v(T) TT_V6.2.1021. Affected is an unknown function of the file /control/WANIPConnection of the component SOAP Request Handler. The manipulation of the argument NewConnectionType leads to buffer overflow. The attack…
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needs to be done within the local network. 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.