CVE-2026-74843: Wavlink WN531P3
Critical severity, CVSS 10.0. EPSS: 1% chance of exploitation in the next 30 days.
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.
Affected products
Published 2026-08-17. Last modified 2026-08-20.