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.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00042.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
TP-Link System Inc. TL-WR940N V6 unaffected
Version Status Constraints
0 affected
≤ Build 220801

No data.

No data.

Vendor Product Confidence Versions
Tp-link Tl-wr940n — —
Tp-link Tl-wr940n V6 — —
Tp-link Wr940n — —

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Subscriptions

Vendors Products
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Tl-wr940n Subscribe
Tl-wr940n V6 Subscribe
Wr940n Subscribe

Tracking

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.tp-link.com/en/support/download/tl-wr940n/v6/#Firmware cve-icon cve-icon
https://www.tp-link.com/en/support/faq/4755/ cve-icon cve-icon
https://www.tp-link.com/us/support/download/tl-wr940n/v6/#Firmware cve-icon cve-icon
History

Fri, 21 Nov 2025 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link tl-wr940n
Tp-link tl-wr940n V6
Tp-link wr940n
Vendors & Products Tp-link
Tp-link tl-wr940n
Tp-link tl-wr940n V6
Tp-link wr940n

Thu, 20 Nov 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 20 Nov 2025 08:30:00 +0000

Type Values Removed Values Added
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.
Title UPnP DOS in TL-WR940N V6
Weaknesses CWE-20
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: TPLink

Published:

Updated: 2025-11-20T15:28:29.556Z

Reserved: 2025-10-13T09:20:48.702Z

Link: CVE-2025-11676

cve-icon Vulnrichment

Updated: 2025-11-20T15:28:26.812Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-11-20T15:17:22.747

Modified: 2025-11-21T15:13:59.083

Link: CVE-2025-11676

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-21T09:16:04Z

Weaknesses