What is the CVSS score of CVE-2026-3169?

CVE-2026-3169 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-2026-3169?

A critical vulnerability in Tenda F453 routers allows remote attackers to compromise device functionality with an 8.8 CVSS severity rating.

Is there a public PoC exploit available for CVE-2026-3169?

Yes, a public proof-of-concept exploit is available for CVE-2026-3169. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3169?

Within 24 hours: Inventory all Tenda F453 1.0.0.3 devices in your network and isolate affected units from production environments where possible. Within 7 days: Implement network segmentation to restrict access to administrative interfaces and disable the SafeEmailFilter feature if not operationally critical. Within 30 days: Evaluate replacement with patched Tenda firmware versions or alternative vendor solutions; establish vendor communication protocol to track patch availability.

F453 Firmware CVE-2026-3169

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 - 08:16 nvd

HIGH 8.8

DescriptionCVE.org

A security vulnerability has been detected in Tenda F453 1.0.0.3. This impacts the function fromSafeEmailFilter of the file /goform/SafeEmailFilter of the component httpd. The manipulation of the argument page leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.

AnalysisAI

Buffer overflow in Tenda F453 firmware httpd SafeEmailFilter function allows authenticated remote attackers to achieve complete system compromise through manipulation of the page parameter. Public exploit code exists for this vulnerability, and no patch is currently available. An attacker with valid credentials can execute arbitrary code with full system privileges (read, write, execute).

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects F453 Firmware. A security vulnerability has been detected in Tenda F453 1.0.0.3. This impacts the function fromSafeEmailFilter of the file /goform/SafeEmailFilter of the component httpd. The manipulation of the argument page leads to buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly 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.