CVE-2026-76649 Pre-Authentication NULL Pointer Dereference in UPnP SOAP Action Request Processing in TP-Link TL-WR841N
A pre-authentication null pointer dereference in the UPnP service allows attackers to cause a denial-of-service condition on TP-Link TL-WR841N routers.
- 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-2026-76649?
CVE-2026-76649 is a medium-severity vulnerability in TP-Link System Inc. TL-WR841N v14, published on 28 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A NULL pointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing SOAP action requests. A specially crafted SOAP action request containing unexpected XML content may cause the UPnP daemon to terminate unexpectedly.
Successful exploitation may result in a denial-of-service condition affecting UPnP functionality until the service is restarted or the device is rebooted.
Weakness: CWE-476
Which versions are affected by CVE-2026-76649?
How do I fix CVE-2026-76649?
No fix has been published for CVE-2026-76649 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76649 being exploited?
There is no known exploitation of CVE-2026-76649 in the wild and no public exploit code.
Sources
Also known as GHSA-2cvh-668x-j624.