CVE-2026-109109

critical · 9.3

A vulnerability was detected in Wavlink WL-WN530BE1-A 251117. This vulnerability affects the function strcpy of the file /cgi-bin/ExportAllSettings.cgi of the component Settings Export CGI. Performing a manipulation of the argument HTTP_COOKIE/X-Cmd results in stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure.

9.3

CVSS

0.6%

EPSS (exploit prob.)

48th

EPSS percentile

2026-10-13

Published

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

Weaknesses

CWE-119CWE-121

References

https://gist.github.com/Rauzk/9ef4fe7574e5689386cc43139f4cf9e1
https://vuldb.com/cve/CVE-2026-109109
https://vuldb.com/submit/909191
https://vuldb.com/vuln/416860
https://vuldb.com/vuln/416860/cti

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-109109