CVE-2025-5408 WAVLINK WL-WN576K1 HTTP POST Request login.cgi sys_login buffer overflow
Remote attackers can trigger a buffer overflow in the login handler of WAVLINK routers, potentially leading to code execution or service disruption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-5408?
CVE-2025-5408 is a critical memory corruption vulnerability in WAVLINK QUANTUM D2G, published on 1 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in WAVLINK QUANTUM D2G, QUANTUM D3G, WL-WN530G3A, WL-WN530HG3, WL-WN532A3 and WL-WN576K1 up to V1410_240222 and classified as critical. Affected by this issue is the function sys_login of the file /cgi-bin/login.cgi of the component HTTP POST Request Handler. The manipulation of the argument login_page leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-5408?
How do I fix CVE-2025-5408?
No fix has been published for CVE-2025-5408 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-5408 being exploited?
There is no known exploitation of CVE-2025-5408 in the wild and no public exploit code.
Sources
Also known as GHSA-hwq5-562f-8695.