CVE-2026-12935

HighCVSS 8.7

Published: 29/07/2026(UTC)Updated: 30/07/2026(UTC)Translated: 30/07/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Elevated risk

0.81%

53th percentile - higher than 53% of all known CVEs

Summary

The TL-WR940N v6 router has a vulnerability in its RTSP connection tracking module that leads to a stack-based buffer overflow. When a LAN client connects to a malicious RTSP server, a crafted RTSP message can trigger improper memory handling in the kernel module.

Risk Assessment

Successful exploitation can lead to denial-of-service (DoS) or remote code execution (RCE), potentially resulting in full device compromise. The vulnerability can be exploited by an unauthenticated attacker under default configuration.

Recommendation

Check for firmware updates from the manufacturer and apply them immediately. If unavailable, consider disabling RTSP functionality or isolating the device from the network.

Other vulnerabilities in TL-WR940N v6

CVE-2026-11409High
An authenticated OS command injection vulnerability exists in the IPv6 PPPoE configuration handler in TL-WR940N v6 due to improper sanitization of user input. An attacker with administrative access may exploit this issue to execute arbitrary system commands with elevated privileges.

Original NVD description (English source)

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.