CVE-2025-14992
Published: 21 December 2025
Summary
CVE-2025-14992 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Ac18 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 45.7th 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).
Deeper analysis
CVE-2025-14992 is a stack-based buffer overflow vulnerability affecting the Tenda AC18 router on firmware version 15.03.05.05. The flaw exists in the strcpy function within the /goform/GetParentControlInfo endpoint of the HTTP Request Handler component, where manipulation of the "mac" argument triggers the overflow.
The vulnerability enables remote exploitation over the network (AV:N) with low attack complexity (AC:L), requiring low privileges (PR:L) but no user interaction (UI:N). Attackers can achieve high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), with an unchanged scope (S:U), resulting in a CVSS v3.1 base score of 8.8. It is associated with CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow).
Advisories and references, including VulDB entries and a GitHub repository, provide details on the vulnerability but do not specify patches or mitigations. A public proof-of-concept is available, including reproduction steps for the buffer overflow in the Tenda AC18's GetParentControlInfo function.
The exploit has been publicly disclosed and may be used by attackers.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-204666
Vulnerability details
A security vulnerability has been detected in Tenda AC18 15.03.05.05. The impacted element is the function strcpy of the file /goform/GetParentControlInfo of the component HTTP Request Handler. The manipulation of the argument mac leads to stack-based buffer overflow. Remote exploitation…
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of the attack is possible. The exploit has been disclosed publicly and may be used.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
The vulnerability is a remotely exploitable stack-based buffer overflow in the HTTP request handler of a public-facing router web interface, directly enabling exploitation of public-facing applications.
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-10 requires validation of the 'mac' argument in the HTTP request to prevent the stack-based buffer overflow triggered by unrestricted input in GetParentControlInfo.
SI-16 enforces memory protections such as stack canaries and address space layout randomization to mitigate exploitation of the stack buffer overflow in the strcpy function.
SI-2 mandates timely identification, reporting, and correction of the specific buffer overflow flaw in the Tenda AC18 firmware, eliminating the vulnerability.