TI-2026-11008 Aliases CVE-2026-12935 GHSA-4j6v-4j5m-vgpq

Unauthenticated Remote Code Execution in TP-Link TL-WR940N RTSP Conntrack Feature

MEDIUM 42CWE-121Published 2026-07-29 · Updated 2026-07-30

Key facts

Attack vector: Network
Privileges required: None
User interaction: Passive
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

The TL-WR940N v6 router contains a vulnerability in its RTSP connection tracking module that can lead to a stack-based buffer overflow. The issue occurs when a LAN client initiates a connection to a malicious RTSP server controlled by an attacker. A specially crafted RTSP message may trigger improper memory handling within the kernel module Successful exploitation of this vulnerability may result in a denial-of-service (DoS) condition or allow remote code execution (RCE), potentially leading to full compromise of the device. This vulnerability can be exploited by an unauthenticated attacker under the device's default configuration.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00986 62nd percentileScored 2026-11-07

Fix Fixed TL-WR940N v6 (TP-Link Systems Inc.): (US)_V6_260528, (JP)_V6_260527, (EU)_V6_260528

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
TP-Link	TL-WR940N v6	before (US)_V6_260528; before (JP)_V6_260527; before (EU)_V6_260528	(US)_V6_260528, (JP)_V6_260527, (EU)_V6_260528	Patch available	CNA

TL-WR940N v6 VendorTP-Link Affected before (US)_V6_260528; before (JP)_V6_260527; before (EU)_V6_260528 Fixed in (US)_V6_260528, (JP)_V6_260527, (EU)_V6_260528 Patch available CNA

Remediation

Fix · CNA TL-WR940N v6 (TP-Link Systems Inc.) Fixed in (US)_V6_260528, (JP)_V6_260527, (EU)_V6_260528

Timeline

2026-10-02 Threatist record created from CVE-2026-12935
2026-10-03 Alias added: GHSA-4j6v-4j5m-vgpq

References

Patch 3

Advisory 1

https://www.tp-link.com/us/support/faq/5213/

TI-2023-16571 TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain… KEVCVSS 3.1HIGH 8.8
TI-2023-01313 Command injection in TP-Link Archer AX21 KEVCVSS 3.1HIGH 8.8
TI-2020-14907 TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the… KEVCVSS 3.1HIGH 8.8
TI-2025-08589 Authenticated RCE via Parental Control command injection KEVCVSS 4.0HIGH 8.6
TI-2015-02672 Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317… KEVCVSS 3.1HIGH 7.5
TI-2023-27456 Authentication bypass by spoofing in TP-Link TL-WR841N KEVCVSS 3.1MEDIUM 6.5

See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences