CVE-2025-11676: UPnP DOS in TL-WR940N V6

Severity: high (CVSS 7.1 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-11-20 · updated 2026-10-18
Weakness: CWE-20

Description

Improper input validation vulnerability in TP-Link System Inc. TL-WR940N V6 (UPnP modules), which allows unauthenticated adjacent attackers to perform DoS attack. This issue affects TL-WR940N V6 <= Build 220801.

Affected products

TP-Link System Inc. TL-WR940N V6: through Build 220801

References

https://www.tp-link.com/en/support/download/tl-wr940n/v6/#Firmware
https://www.tp-link.com/en/support/faq/4755/
https://www.tp-link.com/us/support/download/tl-wr940n/v6/#Firmware

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