CVE-2025-8017
Published: 22 July 2025
Summary
CVE-2025-8017 is a high-severity Improper Restriction of Operations within the Bounds of a Memory Buffer (CWE-119) vulnerability in Tenda Ac7 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 30.8% 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).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
Directly remediates the stack-based buffer overflow in formSetMacFilterCfg by applying firmware updates to eliminate the flaw.
Validates the deviceList input to the /goform/setMacFilterCfg endpoint to prevent stack buffer overflow from malformed data.
Implements memory protections such as stack canaries and non-executable stacks to mitigate exploitation of the stack-based buffer overflow.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Stack-based buffer overflow in the router's public httpd web endpoint (/goform/setMacFilterCfg) directly enables remote exploitation of a public-facing application, resulting in arbitrary code execution.
NVD Description
A vulnerability was found in Tenda AC7 15.03.06.44. It has been classified as critical. Affected is the function formSetMacFilterCfg of the file /goform/setMacFilterCfg of the component httpd. The manipulation of the argument deviceList leads to stack-based buffer overflow. It is…
more
possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
Deeper analysisAI
CVE-2025-8017 is a critical stack-based buffer overflow vulnerability affecting the Tenda AC7 router running firmware version 15.03.06.44. The issue resides in the formSetMacFilterCfg function within the /goform/setMacFilterCfg endpoint of the httpd component. By manipulating the deviceList argument, an attacker can trigger the overflow, as classified under CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer) and CWE-121 (Stack-based Buffer Overflow). The vulnerability carries a CVSS v3.1 base score of 8.8.
The vulnerability enables remote exploitation over the network with low attack complexity and requires low privileges (PR:L), such as those of an authenticated user, with no user interaction needed. Successful exploitation grants high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), potentially allowing arbitrary code execution on the device.
Advisories from VulDB (ctiid.317220, id.317220) document the vulnerability details and submission, while a GitHub repository by Thir0th provides a proof-of-concept exploit demonstrating the stack overflow in parse_macfilter_rule. The Tenda vendor website is referenced, but no specific patches or mitigations are detailed in the available information. Security practitioners should monitor for firmware updates and restrict access to the affected endpoint.
The exploit has been publicly disclosed, increasing the risk of real-world attacks against unpatched Tenda AC7 devices.
Details
- CWE(s)