CVE-2026-76650: Pre-Authentication NULL Pointer Dereference in UPnP SOAP State Variable Query Processing in TP-Link TL-WR841N
Published Aug 28, 2026
·Updated
A NULL pointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing SOAP state variable query requests. A specially crafted SOAP query may trigger unexpected termination or instability of the process hosting the UPnP service.
Successful exploitation may result in a denial-of-service condition affecting UPnP discovery, state query, or related management functionality until the affected process is restarted or the device is rebooted.
Affected Software
1 affected component
TP-Link TL-WR841N=v14
Event History
Aug 28, 2026
CVE Published
via MITRE·08:19 PM
Data Sourced
via MITRE·08:19 PM
DescriptionWeakness
Frequently Asked Questions
1
Where should administrators check for firmware updates for the affected hardware revision?
TP-Link provides TL-WR841N v14 firmware download pages for both the US and international support sites. The provided references also include a TP-Link support FAQ.