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

CVE-2026-22081Cookie without HTTPOnly Flag Vulnerability in Tenda Wireless Routers

High 8.8

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 0.4% (higher than 32% of all known vulnerabilities).

Severity (CVSS 4.0)8.8High
Exploit odds (30 days)0.4%top 68.2% 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 missing HTTPOnly flag for session cookies associated with the web-based administrative interface. A remote at-tacker could exploit this vulnerability by capturing session cookies transmitted over an insecure HTTP connection. Successful exploitation of this vulnerability could allow the attacker to obtain sensitive information and gain unau-thorized 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-1004 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N

References