Vulnerability · Published Aug 28, 2026 · Assigned by TPLink
CVE-2026-76650Pre-Authentication NULL Pointer Dereference in UPnP SOAP State Variable Query Processing in TP-Link TL-WR841N
Medium 5.3
In plain English
A medium-severity null pointer dereference in TL-WR841N v14 from TP-Link System Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities).
Official description
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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TP-Link System Inc. | TL-WR841N v14 | 0 – before TL-WR841N(US)_V14_4.19 Build 260820 Rel.334780 – before TL-WR841N(EU)_V14_4.19 Build 260821 Rel.56588 |
Weakness: CWE-476 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N