CVE-2025-12273
Published: 27 October 2025
Summary
CVE-2025-12273 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Ch22 Firmware. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 36.0% 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-2 (Flaw Remediation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Requires validation of the 'page' argument in the /goform/webExcptypemanFilter endpoint to prevent buffer overflow exploitation.
Directly mandates identification, reporting, and correction of the buffer overflow flaw in Tenda CH22 firmware version 1.0.0.1.
Implements memory safeguards like stack canaries or non-executable memory to mitigate successful buffer overflow exploits even if input validation fails.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Buffer overflow in unauthenticated web endpoint (/goform/webExcptypemanFilter) enables remote exploitation of public-facing application for arbitrary code execution (T1190) and denial of service via crashes (T1499.004).
NVD Description
A weakness has been identified in Tenda CH22 1.0.0.1. Affected is the function fromwebExcptypemanFilter of the file /goform/webExcptypemanFilter. Executing a manipulation of the argument page can lead to buffer overflow. The attack may be launched remotely. The exploit has been…
more
made available to the public and could be used for attacks.
Deeper analysisAI
CVE-2025-12273 is a buffer overflow vulnerability in Tenda CH22 firmware version 1.0.0.1. The flaw affects the fromwebExcptypemanFilter function in the /goform/webExcptypemanFilter file, where manipulation of the "page" argument triggers the overflow. Published on 2025-10-27, it is associated with CWE-119 and CWE-120.
The vulnerability 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 network-accessible exploitation with low complexity and low privileges required, without user interaction. Remote attackers with low privileges can exploit it to achieve high impacts on confidentiality, integrity, and availability, potentially compromising the device.
Advisories are documented on VulDB (ctiid.329945, id.329945, submit.674161) and a GitHub issue at QIU-DIE/CVE/issues/22, with the Tenda website referenced. An exploit is publicly available and could be used for attacks, though specific mitigation or patch details are not outlined in the available information.
Details
- CWE(s)