CVE-2025-27129CWE-288

An authentication bypass vulnerability exists in the HTTP authentication functionality of Tenda AC6 V5.0 V02.03.01.110

Critical · published August 20, 2025

CVSS v3.1
9.8
EPSS
2%
Percentile
81.6
In the wild
Unconfirmed
What it is

🚨 An authentication bypass in Tenda AC6 could let attackers run arbitrary code with just a specially crafted HTTP request! 🔥 Think of it as a hotel where guests can check in without any ID—once inside, they can access any room and even change the locks! If exploited, this vulnerability could allow an attacker to take over the device entirely, running malicious code at will. This could lead to a complete compromise of the network, stealing data or reconfiguring settings to create chaos.

Put simply

Think of it as a hotel where guests can check in without any ID—once inside, they can access any room and even change the locks! This vulnerability arises from a flaw in the HTTP authentication functionality, allowing attackers to bypass authentication controls and execute arbitrary commands remotely on affected devices.

What to do

If exploited, this vulnerability could allow an attacker to take over the device entirely, running malicious code at will. This could lead to a complete compromise of the network, stealing data or reconfiguring settings to create chaos. Immediately patch the Tenda AC6 router to version V02.03.01.110, which addresses this issue. Also, review and update any firewall and network policies to limit access to the router from untrusted networks. You've got this! Keep your network safe by following these steps, and you’ll be a security hero in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02109 · 81.6th percentile
Weakness
CWE-288 · Authentication Bypass Using an Alternate Path or Channel
Published
2025-08-20T13:09Z
EPSS history
Timeline
  • 20 AUG 13:09Z
    An authentication bypass vulnerability exists in the HTTP authentication functionality of Tenda AC6 V5.0 V02.03.01.110
    cvelistv5