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Vulnerability · Published Jan 9, 2026 · Assigned by CERT-In

CVE-2026-22080Insecure Transmission Vulnerability in Tenda Wireless Routers

High 8.7

In plain English

A high-severity security flaw in 300Mbps Wireless Router F3 and N300 Easy Setup Router from Tenda. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.1%top 98.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

This vulnerability exists in Tenda wireless routers (300Mbps Wireless Router F3 and N300 Easy Setup Router) due to the transmission of credentials encoded using reversible Base64 encoding through the web-based administrative interface. An attacker on the same network could exploit this vulnerability by intercepting network traffic and capturing the Base64-encoded credentials. Successful exploitation of this vulnerability could allow the attacker to obtain sensitive information and gain unauthorized access to the targeted device.

Affected products (as reported)

VendorProductVersions
Tenda 300Mbps Wireless Router F3 and N300 Easy Setup Router F3 v3.0 Firmware V12.01.01.41F3 v3.0 Firmware V12.01.01.42F3 v3.0 Firmware V12.01.01.48F3 v3.0 Firmware V12.01.01.52F3 v3.0 Firmware V12.01.01.55F3 v4.0 Firmware V03.03.01.40

Weakness: CWE-319 · Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References