CVE-2025-9046: Tenda AC20 setMacFilterCfg sub_46A2AC stack-based overflow

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-08-15 · updated 2026-06-17
Weakness: CWE-119

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

Tenda AC20: 16.03.08.12

References

https://github.com/ZZ2266/.github.io/blob/main/AC20/formSetMacFilterCfg/readme.md
https://github.com/ZZ2266/.github.io/blob/main/AC20/formSetMacFilterCfg/readme.md#poc-python-exploit-script
https://vuldb.com/?ctiid.320267
https://vuldb.com/?id.320267
https://vuldb.com/?submit.631932
https://www.tenda.com.cn/

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