What is the CVSS score of CVE-2026-3380?

CVE-2026-3380 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-2026-3380?

A critical vulnerability (CVE-2026-3380) affects Tenda F453 wireless routers with no vendor patch currently available.

Is there a public PoC exploit available for CVE-2026-3380?

Yes, a public proof-of-concept exploit is available for CVE-2026-3380. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3380?

Within 24 hours: Inventory all Tenda F453 devices on the network and isolate affected units from production environments if possible. Within 7 days: Implement network segmentation to restrict access to the /goform/L7Im endpoint and deploy WAF rules to block malicious requests. Within 30 days: Evaluate replacement with patched firmware versions or alternative vendor equipment; monitor Tenda security advisories for patch availability.

F453 Firmware CVE-2026-3380

HIGH

Buffer Overflow (CWE-119)

2026-03-01 cna@vuldb.com

Buffer Overflow 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

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 - 22:05 vuln.today

PoC Detected

Mar 03, 2026 - 17:32 vuln.today

Public exploit code

CVE Published

Mar 01, 2026 - 04:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was found in Tenda F453 1.0.0.3. This issue affects the function frmL7ImForm of the file /goform/L7Im. The manipulation of the argument page results in buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.

AnalysisAI

Remote code execution in Tenda F453 Firmware 1.0.0.3 allows authenticated attackers to execute arbitrary code via a buffer overflow in the L7Im web interface parameter handler. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with network access and valid credentials can achieve complete system compromise including data theft, modification, and service disruption.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects F453 Firmware. A vulnerability was found in Tenda F453 1.0.0.3. This issue affects the function frmL7ImForm of the file /goform/L7Im. The manipulation of the argument page results in buffer overflow. The attack may be launched remotely. The exploit has been made public and could be used.

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.