CVE-2025-13446 HIGH

CVE-2025-13446: Tenda AC21 SetSysTimeCfg stack-based overflow

Vendor Tenda
Product AC21
Weakness CWE-121
Published November 20, 2025
Last update February 24, 2026
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 vulnerability has been found in Tenda AC21 16.03.08.16. This vulnerability affects unknown code of the file /goform/SetSysTimeCfg. The manipulation of the argument timeZone/time leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed to the public and may be used.

Key dates

02Disclosure timeline

November 20, 2025 CVE published
February 24, 2026 Record updated