PT-2025-47551 · Tenda · Tenda Ac21

Jiahui288 · Published 2025-11-13 · Updated 2025-11-21 · CVE-2025-13446

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Tenda AC21 version 16.03.08.16

Description A flaw exists in Tenda AC21 version 16.03.08.16 related to a stack-based buffer overflow. The issue is located in the file /goform/SetSysTimeCfg. The timeZone/time argument can be manipulated to trigger the overflow, allowing for remote exploitation. The exploit has been publicly disclosed.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

RCE

Stack Overflow

Buffer Overflow

Weakness Enumeration

CWE-121

CWE-119

Related Identifiers

BDU:2025-14740

CVE-2025-13446

Affected Products

Tenda Ac21

References · 16

• 🔥 https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN9.md · Exploit
• 🔥 https://github.com/Madgeaaaaa/MY_VULN_2/blob/main/Tenda/VULN8.md · Exploit
• https://bdu.fstec.ru/vul/2025-14740 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-13446 · Security Note
• https://osv.dev/vulnerability/CVE-2025-13446 · Vendor Advisory
• https://t.me/cveNotify/143649 · Telegram Post
• https://vuldb.com/?id.333018 · Note
• https://twitter.com/VulmonFeeds/status/1991596533649666329 · Twitter Post
• https://tenda.com.cn · Note
• https://twitter.com/CVEnew/status/1991409446241595602 · Twitter Post
• https://twitter.com/CveFindCom/status/1991562280417341547 · Twitter Post
• https://vuldb.com/?submit.694430 · Note
• https://vuldb.com/?ctiid.333018 · Note
• https://twitter.com/gothburz/status/1991608860683980909 · Twitter Post
• https://t.me/CVEtracker/37809 · Telegram Post