CVE-2026-74843
Wavlink WN531P3/WN535M1 Export Pingortrace CGI export_pingortrace.cgi strcpy stack-based overflow
CRITICAL 9.3EPSS 1.0%
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
- Wavlink · WN531P3 · WN535M1
- CVSS v4.0 VULDB
- 9.3 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULDB
- 10.0 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H - CVSS v2.0 VULDB
- 10.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C - EPSS
- 1.04% chance of exploitation in the next 30 days, 63rd percentile
- Published
- 2026-08-17
Proof-of-concept exploits (1)
- wcndsb-sketch/WAVLINK_WN535M1-M35M1_V250922-Buffer-Overflow/blob/main/CVE-Report-WAVLINK-…0★ · 2026-07-02