CVE-2026-3728
Published: 08 March 2026
Summary
CVE-2026-3728 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda F453 Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 9.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-16 (Memory Protection).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly remediates the stack-based buffer overflow flaw in the fromSetCfm function of the /goform/setcfm endpoint through timely flaw identification, reporting, and correction.
Validates manipulated funcname and funcpara1 arguments at the web form input point to prevent the stack-based buffer overflow.
Implements memory protections such as stack canaries, ASLR, and non-executable memory to block exploitation of the stack-based buffer overflow leading to remote code execution.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in the router's authenticated web management endpoint (/goform/setcfm) directly enables remote exploitation of a public-facing application for initial access and arbitrary code execution, while the low-privilege requirement to high-impact RCE outcome maps to privilege escalation on the device.
NVD Description
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…
more
disclosed and may be utilized.
Deeper analysisAI
CVE-2026-3728 is a stack-based buffer overflow vulnerability in the Tenda F453 router running firmware version 1.0.0.3(1.0f). The issue resides in the fromSetCfm function within the /goform/setcfm endpoint, triggered by manipulating the funcname and funcpara1 arguments. Associated with CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow), it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), indicating high severity.
Remote attackers with low privileges, such as authenticated users, can exploit this vulnerability over the network with low complexity and no user interaction required. Successful exploitation enables high-impact consequences, including unauthorized access to confidential data, modification of system integrity, and denial of service through availability disruption, potentially leading to full remote code execution on the affected device.
Advisories referenced in VulDB entries (ctiid.349706, id.349706, submit.766933) and a GitHub repository detail the vulnerability, including a publicly disclosed exploit at https://github.com/Litengzheng/vul_db/blob/main/F453/vul_97/README.md. The Tenda vendor website (https://www.tenda.com.cn/) is listed as a reference, though specific patch details are not outlined in the available information.
The exploit has been publicly disclosed, increasing the risk of utilization against unpatched Tenda F453 devices.
Details
- CWE(s)