Back Securityaffairs.Co

Hidden Tenda Router Backdoor Grants Admin Access, No Patch Available

Securityaffairs.Co •Pierluigi Paganini • July 7, 2026

CERT/CC warns an unpatched backdoor in several Tenda routers lets attackers bypass login and gain full admin access with a hidden password. CERT/CC published an alert documenting an undocumented authentication backdoor in multiple Tenda firmware versions, tracked as CVE-2026-11405. The flaw gives anyone who knows the right password full administrative access to the device’s web […]

The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical Backdoor Vulnerability in Tenda Routers Exposes Admin Access A critical vulnerability, CVE-2026-11405, has been discovered in multiple Tenda router firmware versions, allowing unauthenticated attackers to gain full administrative control via a hidden backdoor. This flaw exists in the /bin/httpd binary, where the login() function bypasses standard authentication mechanisms by retrieving a hidden password from device configurations. Affected models include the FH1201, W15E, AC10, AC5, and AC6 series. No patch is currently available, and exploitation attempts are already underway, with automated scanners probing for vulnerable devices. Security advisories recommend disabling remote management and changing default LAN IPs to mitigate risks. The vulnerability has been confirmed by CERT/CC, and public proof-of-concept code has emerged, further escalating the threat landscape. 10 sources 70

Extracted Entities

Hidden Tenda Router Backdoor Grants Admin Access, No Patch Available

The full story

Extracted Entities

Attack Types (1)

CVEs (1)

CWE Weaknesses (1)

MITRE ATT&CK (1)