by Kastro
Paper/Archive/CVE-2026-74843

CVE-2026-74843

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

EPSS 1%CVSS 10.0
critical.is priorityof 100
43
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 64.0.640 × 2012.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
WN531P3V250922–CNA
WN535M1V250922–CNA

Scores by source

VulDB (CNA)10.0CVSS: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
VulDB (CNA)10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
VulDB (CNA)10.0CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

writeupvuldb.com/vuln/391205refvuldb.com/vuln/391205/ctiwriteupvuldb.com/cve/CVE-2026-74843writeupvuldb.com/submit/875331exploitgithub.com/wcndsb-sketch/WAVLINK_WN535M1-M35M1_V250922-Buffer-Overflow/blob/main/CVE-Report-WAVLINK-WN535M1-RCE.pdf