CRITICAL

CVE-2026-74843

Wavlink WN531P3/WN535M1 Export Pingortrace CGI export_pingortrace.cgi strcpy stack-based overflow

CVSS v3

CRITICAL

EPSS Score

1.0 %

exploit probability, as of 2026-10-02

CISA KEV

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published: 2026-08-17
Last Modified: 2026-08-17

Frequently asked questions

What is CVE-2026-74843?

Is CVE-2026-74843 actively exploited?

Active exploitation of CVE-2026-74843 has not been confirmed. Its EPSS score was 1.0% on 2026-10-02, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-74843?

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

Is CVE-2026-74843 affecting your environment?

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