CVE-2026-74843

criticalCVSS 10covered by 1 sourcefirst seen 2026-08-17

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.

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Exploitation outlook

Low exploitation risk0.58% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 45% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-74843: A vulnerability was determined in Wavlink WN531P3 and WN535M1 V250922. Affected by this vulner…nvd · 2026-08-17

External references

NVD record for CVE-2026-74843

CVE.org record

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