CVE-2026-22081
CVE-2026-22081 is a high-severity vulnerability with a CVSS 4.0 base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1004.
Key facts
- Severity: High (CVSS 4.0 base score 8.8)
- EPSS exploit prediction: 0% (29th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-1751
- Weakness: CWE-1004
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-22081?
- 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.
- How severe is CVE-2026-22081?
- CVE-2026-22081 has a CVSS 4.0 base score of 8.8, rated high severity.
- Is CVE-2026-22081 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-22081?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-22081 have an EU (EUVD) identifier?
- Yes. CVE-2026-22081 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1751.
- When was CVE-2026-22081 published?
- CVE-2026-22081 was published on 2026-01-09 and last updated on 2026-06-17.
References
Other CWE-1004 vulnerabilities
- CVE-2025-26844 — Critical (CVSS 9.8): An issue was discovered in Znuny through 7.1.3. A cookie is set without the HttpOnly flag.
- CVE-2026-42239 — High (CVSS 8.1): Budibase is an open-source low-code platform. Prior to version 3.35.10, the budibase:auth cookie containing the JWT…
- CVE-2025-27223 — High (CVSS 7.5): TRUfusion Enterprise through 7.10.4.0 exposes the encrypted COOKIEID as an authentication mechanism for some endpoints…
- CVE-2025-24318 — Medium (CVSS 6.8): Cookie policy is observable via built-in browser tools. In the presence of XSS, this could lead to full session…
- CVE-2026-0696 — Medium (CVSS 6.5): In ConnectWise PSA versions older than 2026.1, certain session cookies were not set with the HttpOnly attribute. In…
- CVE-2025-12031 — Medium (CVSS 5.3): HTTP Security Misconfiguration - Lacking Secure and HTTPOnly Attribute may allow reading the sensitive cookies from…