CVE-2025-13446

Tenda AC21 SetSysTimeCfg stack-based overflow

Published: Nov 20, 2025Updated: Nov 21, 2025 Sources: CVE List NVD BDUCWE-119

8.8HIGH

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:LPrivileges Required

Low

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-119 CWE-121

Affected Products

Tenda

commercial·CN

AC21

Networking Infrastructure

ac21 firmware

Networking Infrastructure

Shenzhen Tenda Technology Co., Ltd.

commercial·CNaka tenda

Tenda AC21On-premNetwork Device

Networking Infrastructure / router-switch

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

Privilege Escalation

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References

https://vuldb.com/?id.333018

vuldb.com

https://vuldb.com/?ctiid.333018

vuldb.com

https://vuldb.com/?submit.694425

vuldb.com

and 7 more references View all →

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