CVE-2026-76650: TP-Link TL-WR841N v14 NULL pointer dereference in UPnP

CVE-2026-76650 · Severity: info · Published 2026-08-28

TP-Link TL-WR841N v14 is a widely deployed home router that uses UPnP (Universal Plug and Play) for device discovery and management. A flaw in the UPnP service can be triggered by specially crafted network requests, causing the UPnP process to crash and temporarily disabling device discovery and network management features until the router is rebooted.

Technologies: TP-Link TL-WR841N. Vendors: TP-Link.

Quick answers

Is CVE-2026-76650 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-76650 being exploited in the wild.
How severe is CVE-2026-76650?
Informational severity, published 28 August 2026.
Which products and versions are affected?
TP-Link TL-WR841N v14.
Is there a fix for CVE-2026-76650?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-76650 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-76650?
Check whether you run TP-Link TL-WR841N at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A NULL pointer dereference vulnerability exists in the TL-WR841N v14 UPnP service when processing SOAP (Simple Object Access Protocol) state variable query requests. The vulnerability is triggered when a specially crafted SOAP query is sent to the device, causing an unhandled NULL pointer dereference in the UPnP process. An attacker on the local network (or remotely if UPnP is exposed) can send a malformed SOAP query to trigger unexpected process termination. Successful exploitation results in denial-of-service, disabling UPnP discovery and state queries until the affected service restarts or the device reboots. No patch information is currently available.

Affected products

  • TP-Link TL-WR841N v14

Timeline

  • 2026-08-28: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.