CVE-2023-39751
Memory Safety in Tp-Link Tl-Wr941Nd V6 Firmware
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2023-39751 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Tp-Link Tl-Wr941Nd V6 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Security Account Manager (T1003.002); ranked in the top 5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
TP-Link TL-WR941ND V6 routers contain a buffer overflow vulnerability triggered by the pSize parameter at the /userRpm/PingIframeRpm endpoint. The flaw is an out-of-bounds write (CWE-787) that affects the web management interface of this specific firmware version and carries a CVSS 3.1 score of 9.8.
An unauthenticated attacker with network access can supply a crafted pSize value to corrupt adjacent memory, enabling remote code execution, information disclosure, or denial of service without any user interaction. The published technical write-up on GitHub demonstrates the request that triggers the overflow but provides no vendor patch or mitigation guidance. The associated EPSS score has remained flat at 0.1254 since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-43451
Vulnerability Data
TP-Link TL-WR941ND V6 were discovered to contain a buffer overflow via the pSize parameter at /userRpm/PingIframeRpm.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
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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.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Vulnerability scanning and recording can discover out-of-bounds write flaws so they can be remediated.
Patching or replacing vulnerable software directly eliminates known instances of this coding weakness.
Secure-development practices (static analysis, bounds checking, code review) are the primary means of preventing out-of-bounds writes.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.