CVE-2025-9791

A weakness has been identified in Tenda AC20 16.03.08.05. This vulnerability affects unknown code of the file /goform/fromAdvSetMacMtuWan. This manipulation of the argument wanMTU causes stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be exploited.

Score

CVSS 3.1 9.8 Critical

Status

Analyzed - cna@vuldb.com

Published

2025-09-01

Last modified

2025-09-02

Weaknesses

CWE-119, CWE-121, CWE-787

Affected products

• Ac20 (Tenda)
• Ac20 Firmware (Tenda)

References

• https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md
• https://github.com/Cpppq43/Tenda/blob/main/Tenda_AC20_V16.03.08.05.md#poc
• https://vuldb.com/?ctiid.322106
• https://vuldb.com/?id.322106
• https://vuldb.com/?submit.641088
• https://www.tenda.com.cn/