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

Quick assessment

Affected
Tenda 300Mbps Wireless Router F3 and N300 Easy Setup Router
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Tenda N300是中国腾达（Tenda）公司的一款路由器。 Tenda N300存在安全漏洞，该漏洞源于与基于Web的管理界面关联的会话cookie缺少HTTPOnly标志，可能导致远程攻击者通过不安全的HTTP连接捕获会话cookie，从而获得未经授权的访问。

AI Predicted 6.5 Difficulty: Easy EPSS 0.35% · P29

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys
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I. Basic Information for CVE-2026-22081

Vulnerability Information
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Vulnerability Title
Cookie without HTTPOnly Flag Vulnerability in Tenda Wireless Routers
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
没有’HttpOnly’标志的敏感Cookie
Source: CVE Program / CVE List V5
Vulnerability Title
Tenda N300 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tenda N300是中国腾达（Tenda）公司的一款路由器。 Tenda N300存在安全漏洞，该漏洞源于与基于Web的管理界面关联的会话cookie缺少HTTPOnly标志，可能导致远程攻击者通过不安全的HTTP连接捕获会话cookie，从而获得未经授权的访问。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Tenda 300Mbps Wireless Router F3 and N300 Easy Setup Router F3 v3.0 Firmware V12.01.01.41 -

II. Public POCs for CVE-2026-22081

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III. Intelligence Information for CVE-2026-22081

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Vendor Advisories for CVE-2026-22081 (1)

Same Patch Batch · Tenda · 2026-01-09 · 4 CVEs total

CVE-2026-22082 Insecure Session ID Management Vulnerability in Tenda Wireless Routers
CVE-2026-22080 Insecure Transmission Vulnerability in Tenda Wireless Routers
CVE-2026-22079 Cleartext Transmission Vulnerability in Tenda Wireless Routers

IV. Related Vulnerabilities

Same product: 300Mbps Wireless Router F3 and N300 Easy Setup Router
Same vendor: Tenda
Same weakness: CWE-1004

V. Comments for CVE-2026-22081

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