CVE-2026-74843
CriticalCVSS 10.0Summary
In Wavlink WN531P3 and WN535M1 V250922, the strcpy function in the file /etc/lighttpd/www/cgi-bin/export_pingortrace.cgi (Export Pingortrace CGI component) is vulnerable to stack-based buffer overflow via manipulation of the HTTP_COOKIE argument. The attack can be launched remotely, and the exploit has been publicly disclosed.
Risk Assessment
A remote attacker can execute arbitrary code on the device, potentially leading to full compromise of the device and network.
Recommendation
Apply available vendor patches or restrict access to the device if no patch is available.
Original NVD description (English source)
A vulnerability was determined in Wavlink WN531P3 and WN535M1 V250922. Affected by this vulnerability is the function strcpy of the file /etc/lighttpd/www/cgi-bin/export_pingortrace.cgi of the component Export Pingortrace CGI. Executing a manipulation of the argument HTTP_COOKIE can lead to stack-based buffer overflow. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure.