CVE-2026-3271
Published: 27 February 2026
Summary
CVE-2026-3271 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 in the top 48.8% of CVEs by exploit likelihood; 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).
Deeper analysis
CVE-2026-3271 is a buffer overflow vulnerability affecting the Tenda F453 router on firmware version 1.0.0.3. The issue resides in the fromP2pListFilter function within the file /goform/P2pListFilterof of the httpd component. Manipulation of the "page" argument triggers the buffer overflow, as documented in the CVE description published on 2026-02-27.
The vulnerability enables remote exploitation over the network with low complexity and no user interaction required. Per the CVSS 3.1 score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), it requires low privileges, such as those of an authenticated user, and allows attackers to achieve high impacts on confidentiality, integrity, and availability. It is linked to CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-120 (Buffer Copy without Checking Size of Input).
Advisories on VulDB (ctiid.347995, id.347995, submit.759601) provide details on the vulnerability, while a GitHub repository at https://github.com/Litengzheng/vul_db/blob/main/F453/vul_70/README.md hosts a public exploit that could be used. The Tenda vendor website (https://www.tenda.com.cn/) is referenced, though specific mitigation or patch guidance is not outlined in the available references.
The exploit has been made public, heightening the risk for exposed Tenda F453 devices running the affected firmware.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-8968
Vulnerability details
A vulnerability was found in Tenda F453 1.0.0.3. This impacts the function fromP2pListFilter of the file /goform/P2pListFilterof of the component httpd. The manipulation of the argument page results in buffer overflow. The attack may be launched remotely. The exploit has…
more
been made public and could be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in the router's httpd web component (/goform/P2pListFilter) enables remote exploitation of a public-facing application with low privileges and no user interaction.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Directly prevents buffer overflow exploitation by requiring validation of the manipulable 'page' argument in the fromP2pListFilter function of the httpd component.
Mandates timely identification, reporting, and patching of the specific buffer overflow flaw in Tenda F453 firmware version 1.0.0.3.
Implements memory protections such as non-executable stacks and address space randomization to block code execution from the buffer overflow vulnerability.