CVE-2023-39751
CWE-787Published: August 21, 2023· Updated: Jun 17, 2026
Official Description
TP-Link TL-WR941ND V6 were discovered to contain a buffer overflow via the pSize parameter at /userRpm/PingIframeRpm.
Risk Analysis
A buffer overflow in the TP-Link TL-WR941ND router allows remote attackers to crash the device or execute arbitrary code via the pSize parameter. This is a critical vulnerability due to the ease of remote exploitation.
No public exploit is known, and it is not in the CISA KEV. The vulnerability is remotely exploitable with low complexity.
Check for and apply the latest firmware updates from TP-Link. Restrict access to the router's web management interface.
Technical Analysis
CVE-2023-39751 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-787)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-39751 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts