CVE-2025-9791 HIGH

CVE-2025-9791: Tenda AC20 fromAdvSetMacMtuWan stack-based overflow

Vendor Tenda
Product AC20
Weakness CWE-121
Published September 1, 2025
Last update September 2, 2025
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 1, 2025 CVE published
September 2, 2025 Record updated