Is CVE-2026-74843 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-74843?

CVE-2026-74843 has a CVSS v3 severity of CRITICAL (10).

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CVE-2026-74843

Description

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.