Description
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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Wavlink | WN572 | 20260609 | — |
| Wavlink | WN570H | 20260609 | — |
| Wavlink | WN573 | 20260609 | — |
| Wavlink | WN529 | 20260609 | — |
| Wavlink | WN530 | 20260609 | — |
| Wavlink | WN531 | 20260609 | — |
| Wavlink | WN535 | 20260609 | — |
| Wavlink | etc. WN529 | 20260609 | — |
| Wavlink | WN536 | 20260609 | — |
| Wavlink | WN551 | 20260609 | — |
| Wavlink | WN557 | 20260609 | — |
| Wavlink | NU516 | 20260609 | — |
References
- VDB-385530 | Wavlink NU516 lighttpd upload.cgi strcpy stack-based overflow vdb-entry technical-description
- VDB-385530 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-18607 | CVE Analysis and Report third-party-advisory
- Submit #852637 | WAVLINK Multiple Router Series (WN572, WN570H, WN573, WN529, WN530, WN531, WN535, etc.) WN529, WN530, WN531, WN535, WN536, WN551, WN557, NU516,and so on Stack-based Buffer Overflow third-party-advisory
- https://github.com/0xcc12138/WAVLINK-vul exploit