CVE-2025-11091 HIGH

CVE-2025-11091: Tenda AC21 SetStaticRouteCfg sscanf buffer overflow

Vendor Tenda
Product AC21
Weakness CWE-120
Published September 28, 2025
Last update September 29, 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 security flaw has been discovered in Tenda AC21 up to 16.03.08.16. Affected by this vulnerability is the function sscanf of the file /goform/SetStaticRouteCfg. The manipulation of the argument list results in buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be exploited.

Key dates

02Disclosure timeline

September 28, 2025 CVE published
September 29, 2025 Record updated