CVE-2025-51087
Published: 24 July 2025
Summary
CVE-2025-51087 is a high-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Tenda Ac8 Firmware. Its CVSS base score is 8.6 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 36.5% 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
SI-2 requires timely remediation of identified flaws like this stack buffer overflow by applying vendor firmware patches.
SI-10 mandates validation of information inputs such as the 'time' argument to prevent stack-based buffer overflows at the /goform/saveParentControlInfo endpoint.
SI-16 implements memory protections like stack canaries and DEP to mitigate exploitation of stack buffer overflows even if input validation fails.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The stack-based buffer overflow vulnerability in the Tenda AC8V4 router's web interface (/goform/saveParentControlInfo) via the 'time' parameter enables remote exploitation of a public-facing application, aligning with T1190: Exploit Public-Facing Application.
NVD Description
Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/saveParentControlInfo. The manipulation of the argument time leads to stack-based buffer overflow.
Deeper analysisAI
CVE-2025-51087 is a stack-based buffer overflow vulnerability (CWE-121) in the Tenda AC8V4 router firmware version V16.03.34.06. The flaw occurs at the /goform/saveParentControlInfo endpoint, where manipulation of the "time" argument triggers the overflow. It carries a CVSS v3.1 base score of 8.6 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L) and was published on 2025-07-24T15:15:26.693.
An unauthenticated attacker (PR:N) with network access (AV:N) can exploit the vulnerability remotely with low attack complexity (AC:L) and no user interaction (UI:N). Exploitation leads to high confidentiality impact (C:H), such as potential disclosure of sensitive information, alongside low integrity (I:L) and availability (A:L) impacts within the unchanged scope (S:U).
Advisories and additional details, including potential patches or mitigations, are available via vendor reference at http://tenda.com and a GitHub advisory at https://github.com/TL-SN/IOT/blob/main/Tenda/Tenda-AC8v4%20%20V16.03.34.06/CVE-2025-51087.md.
Details
- CWE(s)