Description
A vulnerability has been found in Wavlink WL-NU516U1 708c073-mt7628. This affects the function fgets of the file nas.cgi. The manipulation of the argument CONTENT_LENGTH leads to stack-based buffer overflow. Remote exploitation of the attack is possible. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Wavlink | WL-NU516U1 | 708c073-mt7628 | — |
References
- VDB-385416 | Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow vdb-entry technical-description
- VDB-385416 | CTI Indicators (IOB, IOC, IOA) signature permissions-required
- CVE-2026-18588 | CVE Analysis and Report third-party-advisory
- Submit #850500 | WAVLINK WL-NU516U1 2026-05-15 (build 708c073-mt7628) Command Injection third-party-advisory
- https://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report2.md broken-link
- https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.bin broken-link patch