What is the CVSS score of CVE-2026-3379?

CVE-2026-3379 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 DNS are affected by CVE-2026-3379?

A critical remote code execution vulnerability affects Tenda F453 routers (version 1.0.0.3) with no patch currently available, exposing organizations using this device to potential network compromise…

Is there a public PoC exploit available for CVE-2026-3379?

Yes, a public proof-of-concept exploit is available for CVE-2026-3379. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3379?

Within 24 hours: Identify and inventory all Tenda F453 1.0.0.3 devices in your environment and isolate them from critical network segments. Within 7 days: Implement network-level mitigations including WAF rules blocking access to /goform/SetIpBind endpoint, restrict administrative access to these devices, and disable IP binding functionality if operationally feasible. Within 30 days: Develop a hardware replacement strategy to migrate away from affected devices, contact Tenda for patch availability status, and establish monitoring for exploitation attempts.

DNS CVE-2026-3379

HIGH

Buffer Overflow (CWE-119)

2026-03-01 cna@vuldb.com

DNS 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 - 17:33 vuln.today

Public exploit code

CVE Published

Mar 01, 2026 - 03:16 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability has been found in Tenda F453 1.0.0.3. This vulnerability affects the function fromSetIpBind of the file /goform/SetIpBind. The manipulation of the argument page leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

Remote code execution in Tenda F453 1.0.0.3 DNS firmware via a buffer overflow in the /goform/SetIpBind endpoint allows authenticated attackers to achieve full system compromise. The vulnerability stems from improper input validation of the page parameter and has public exploit code available. An attacker with network access and valid credentials can execute arbitrary code with complete system privileges.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects F453 Firmware. A vulnerability has been found in Tenda F453 1.0.0.3. This vulnerability affects the function fromSetIpBind of the file /goform/SetIpBind. The manipulation of the argument page leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may 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.