What is the CVSS score of CVE-2026-3167?

CVE-2026-3167 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of F453 Firmware are affected by CVE-2026-3167?

A critical remote code execution vulnerability (CVE-2026-3167) affects Tenda F453 wireless routers with no patch currently available.

Is there a public PoC exploit available for CVE-2026-3167?

Yes, a public proof-of-concept exploit is available for CVE-2026-3167. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3167?

Within 24 hours: Inventory all Tenda F453 1.0.0.3 devices in production and isolate affected units from critical network segments. Within 7 days: Implement network segmentation and WAF rules to block /goform/webtypelibrary requests; disable the httpd component if operationally feasible, or restrict administrative access via IP whitelisting. Within 30 days: Plan device replacement with patched firmware versions or alternative vendors; monitor Tenda security advisories for patch release and deploy immediately upon availability.

F453 Firmware CVE-2026-3167

HIGH

Buffer Overflow (CWE-119)

2026-02-25 cna@vuldb.com

Buffer Overflow Tenda F453 Firmware

8.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

8.8 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 25, 2026 - 17:52 vuln.today

Public exploit code

CVE Published

Feb 25, 2026 - 07:16 nvd

HIGH 8.8

DescriptionCVE.org

A security flaw has been discovered in Tenda F453 1.0.0.3. The impacted element is the function formWebTypeLibrary of the file /goform/webtypelibrary of the component httpd. Performing a manipulation of the argument webSiteId results in buffer overflow. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.

AnalysisAI

Unauthenticated attackers can trigger a buffer overflow in the Tenda F453 firmware via the webSiteId parameter in the /goform/webtypelibrary endpoint, enabling remote code execution with full system compromise. Public exploit code is available and actively deployed against affected devices. No patch has been released.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects F453 Firmware. A security flaw has been discovered in Tenda F453 1.0.0.3. The impacted element is the function formWebTypeLibrary of the file /goform/webtypelibrary of the component httpd. Performing a manipulation of the argument webSiteId results in buffer overflow. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.