What is the CVSS score of CVE-2026-3728?

CVE-2026-3728 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-2026-3728?

A high-severity vulnerability in Tenda F453 routers (CVSS 8.8) allows remote attackers to exploit the /goform/setcfm endpoint with publicly available proof-of-concept code.

Is there a public PoC exploit available for CVE-2026-3728?

Yes, a public proof-of-concept exploit is available for CVE-2026-3728. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-3728?

Within 24 hours: Identify and inventory all Tenda F453 devices in production and isolate or restrict internet-facing access to affected units. Within 7 days: Implement network segmentation to limit router management access, disable remote management features if possible, and deploy WAF rules blocking requests to /goform/setcfm. Within 30 days: Monitor Tenda security advisories for patch availability; prepare replacement hardware or upgrade to patched firmware versions; conduct network access logs review for exploitation attempts.

F453 Firmware CVE-2026-3728

HIGH

Buffer Overflow (CWE-119)

2026-03-08 cna@vuldb.com

Buffer Overflow Stack 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 - 21:55 vuln.today

PoC Detected

Mar 09, 2026 - 15:24 vuln.today

Public exploit code

CVE Published

Mar 08, 2026 - 10:15 nvd

HIGH 8.8

DescriptionCVE.org

A vulnerability was determined in Tenda F453 1.0.0.3/1.If. This issue affects the function fromSetCfm of the file /goform/setcfm. This manipulation of the argument funcname/funcpara1 causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

AnalysisAI

Stack-based buffer overflow in Tenda F453 firmware versions 1.0.0.3/1.1f allows authenticated remote attackers to execute arbitrary code through malformed funcname/funcpara1 parameters in the /goform/setcfm endpoint. Public exploit code exists for this vulnerability, and no patch is currently available. The high CVSS score of 8.8 reflects the complete compromise potential of affected devices.

Technical ContextAI

Classified as CWE-119 (Buffer Overflow). Affects F453 Firmware. A vulnerability was determined in Tenda F453 1.0.0.3/1.If. This issue affects the function fromSetCfm of the file /goform/setcfm. This manipulation of the argument funcname/funcpara1 causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized.

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.