Tenda F3/N300 Web-based Administrative Interface cookie httponly flag

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Tenda F3 and N300. The affected element is an unknown function of the component Web-based Administrative Interface. Performing a manipulation results in cookie httponly flag. This vulnerability is cataloged as CVE-2026-22081. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Tenda F3 and N300 (version now known). It has been classified as problematic. This affects some unknown processing of the component Web-based Administrative Interface. The manipulation with an unknown input leads to a cookie httponly flag vulnerability. CWE is classifying the issue as CWE-1004. The product uses a cookie to store sensitive information, but the cookie is not marked with the HttpOnly flag. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The weakness was shared by Deven Lunkad, Swaroop Dora, Naziya Aslam and And S. Venkatesan as CIVN-2026-0004. The advisory is shared at cert-in.org.in. This vulnerability is uniquely identified as CVE-2026-22081 since 01/06/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/09/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cookie httponly flag
CWE: CWE-1004 / CWE-732 / CWE-275
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

01/06/2026 CVE reserved
01/09/2026 +3 days Advisory disclosed
01/09/2026 +0 days VulDB entry created
01/09/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: tenda.com.cn

Advisory: CIVN-2026-0004
Researcher: Deven Lunkad, Swaroop Dora, Naziya Aslam, And S. Venkatesan
Status: Not defined

CVE: CVE-2026-22081 (🔒)
GCVE (CVE): GCVE-0-2026-22081
GCVE (VulDB): GCVE-100-340269

Entryinfo

Created: 01/09/2026 12:32
Changes: 01/09/2026 12:32 (67)
Complete: 🔍
Cache ID: 216::103

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