CVE-2026-18607: Wavlink Etc. WN529

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A security vulnerability has been detected in Wavlink WN572, WN570H, WN573, WN529, WN530, WN531, WN535, etc. WN529, WN530, WN531, WN535, WN536, WN551, WN557 and NU516 up to 20260609. Affected by this issue is the function strcpy of the file upload.cgi of the component lighttpd. The manipulation of the argument HTTP_COOKIE leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

Affected products

• Wavlink Etc. WN529: version 20260609 only
• Wavlink NU516: version 20260609 only
• Wavlink WN529: version 20260609 only
• Wavlink WN530: version 20260609 only
• Wavlink WN531: version 20260609 only
• Wavlink WN535: version 20260609 only
• Wavlink WN536: version 20260609 only
• Wavlink WN551: version 20260609 only
• Wavlink WN557: version 20260609 only
• Wavlink WN570H: version 20260609 only
• Wavlink WN572: version 20260609 only
• Wavlink WN573: version 20260609 only

Published 2026-08-03. Last modified 2026-08-12.