CVE-2026-3732
Published: 08 March 2026
Summary
CVE-2026-3732 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 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 45.6th 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-2 (Flaw Remediation).
Deeper analysis
CVE-2026-3732 is a stack-based buffer overflow vulnerability affecting Tenda F453 router firmware version 1.0.0.3. The flaw occurs in the strcpy function within the /goform/exeCommand file, where manipulation of the cmdinput argument triggers the overflow. Published on 2026-03-08, it is associated with CWE-119 and CWE-121.
The vulnerability enables remote exploitation by attackers possessing low privileges, as indicated by its CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Attackers require no user interaction and can achieve high impacts on confidentiality, integrity, and availability, potentially resulting in remote code execution.
Advisories and additional details, including public exploit disclosure, are documented in references such as the GitHub repository at https://github.com/Litengzheng/vul_db/blob/main/F453/vul_99/README.md, VulDB entries at https://vuldb.com/?ctiid.349710, https://vuldb.com/?id.349710, and https://vuldb.com/?submit.767222, and the vendor site at https://www.tenda.com.cn/. The exploit has been publicly released and may be actively used.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-10235
Vulnerability details
A security vulnerability has been detected in Tenda F453 1.0.0.3. This affects the function strcpy of the file /goform/exeCommand. The manipulation of the argument cmdinput leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit…
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has been disclosed publicly and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in public web form (/goform/exeCommand) on network device directly enables remote exploitation of a public-facing application (T1190) resulting in arbitrary code/command execution via Unix shell on embedded Linux firmware (T1059.004).
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Timely remediation of the stack-based buffer overflow flaw in the strcpy function of /goform/exeCommand directly eliminates the vulnerability through firmware patching.
Validates the cmdinput argument to prevent oversized or malformed inputs from triggering the stack buffer overflow in the exeCommand handler.
Implements memory protections like stack canaries, ASLR, and DEP to mitigate remote code execution from the stack-based buffer overflow.