CVE-2026-17252 Memory corruption in TL-MR6400 v7.0
An unauthenticated attacker can crash the router's web management interface by sending a malformed HTTP request, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-17252?
CVE-2026-17252 is a high-severity memory corruption vulnerability in TP-Link Systems Inc. TL-MR6400 v7.0, published on 21 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A stack-based out-of-bounds write vulnerability exists in the login request handling functionality of the administrative web interface of TP-Link TL-MR6400 v7 routers. An unauthenticated adjacent attacker can trigger the vulnerability by sending a specially crafted malformed HTTP request.
Successful exploitation may cause the web service process to crash, resulting in a denial-of-service condition and temporary loss of access to the router's web management interface.
Weakness: CWE-787
Which versions are affected by CVE-2026-17252?
How do I fix CVE-2026-17252?
No fix has been published for CVE-2026-17252 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-2026-17252 being exploited?
There is no known exploitation of CVE-2026-17252 in the wild and no public exploit code.
Sources
Also known as GHSA-whg2-2j4x-jfcp.