CVE-2025-25664
Published: 20 February 2025
Summary
CVE-2025-25664 is a critical-severity Out-of-bounds Write (CWE-787) vulnerability in Tenda Ac8 Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 25.7th 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
Implements memory protections like non-executable stacks and stack canaries to prevent exploitation of the stack overflow in the sub_49E098 function via the shareSpeed parameter.
Enforces input validation on the shareSpeed parameter to block oversized or malformed inputs that trigger the out-of-bounds write and buffer overflow.
Provides for timely remediation of the identified stack overflow flaw in Tenda AC8V4 V16.03.34.06 firmware through patching or updates.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack overflow in router web interface via shareSpeed parameter enables remote code execution, mapped to exploitation of public-facing application.
NVD Description
Tenda AC8V4 V16.03.34.06 was discovered to contain a stack overflow via the shareSpeed parameter in the sub_49E098 function.
Deeper analysisAI
CVE-2025-25664, published on 2025-02-20, is a stack overflow vulnerability affecting the Tenda AC8V4 router firmware version V16.03.34.06. The flaw occurs via the shareSpeed parameter in the sub_49E098 function and is classified under CWE-787 (Out-of-bounds Write) and CWE-120 (Buffer Copy without Checking Size of Input). It carries a CVSS v3.1 base score of 9.8 (Critical), indicating severe risk.
The vulnerability enables exploitation over the network (AV:N) with low attack complexity (AC:L), requiring no privileges (PR:N), no user interaction (UI:N), and unchanged impact scope (S:U). Remote, unauthenticated attackers can trigger the stack overflow to achieve high confidentiality (C:H), integrity (I:H), and availability (A:H) impacts, likely resulting in arbitrary code execution or device compromise.
Mitigation details are available in the referenced advisory at https://github.com/jangfan/my-vuln/blob/main/Tenda/AC8V4/SetIpMacBind.md. No specific patches or vendor guidance are detailed in the provided CVE information.
Details
- CWE(s)