CVE-2023-39751
Published: 21 August 2023
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, ranked in the top 5.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
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 details
TP-Link TL-WR941ND V6 were discovered to contain a buffer overflow via the pSize parameter at /userRpm/PingIframeRpm.
- 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.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.