Vulnerability · Published Aug 15, 2025 · Assigned by VulDB
CVE-2025-9046Tenda AC20 setMacFilterCfg sub_46A2AC stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in AC20 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.9%top 38.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was identified in Tenda AC20 16.03.08.12. This issue affects the function sub_46A2AC of the file /goform/setMacFilterCfg. The manipulation of the argument deviceList leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-320267 | Tenda AC20 setMacFilterCfg sub_46A2AC stack-based overflow vdb-entry, technical-description
- VDB-320267 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #631932 | Tenda AC20 V16.03.08.12 Buffer Overflow third-party-advisory
- https://github.com/ZZ2266/.github.io/blob/main/AC20/formSetMacFilterCfg/readme.md related
- https://github.com/ZZ2266/.github.io/blob/main/AC20/formSetMacFilterCfg/readme.md#poc-python-exploit-script exploit
- https://www.tenda.com.cn/ product