CVE-2025-8940

A vulnerability was identified in Tenda AC20 up to 16.03.08.12. Affected by this vulnerability is the function strcpy of the file /goform/saveParentControlInfo. The manipulation of the argument Time leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

• CWE-119
• CWE-120

• https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.mdExploit, Third Party Advisory
• https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.md#pocExploit, Third Party Advisory
• https://vuldb.com/?ctiid.319903Permissions Required, VDB Entry
• https://vuldb.com/?id.319903Third Party Advisory, VDB Entry
• https://vuldb.com/?submit.631836Third Party Advisory, VDB Entry
• https://www.tenda.com.cn/Product
• https://github.com/lin-3-start/lin-cve/blob/main/Tenda%20AC20-2/Tenda%20AC20-2.mdExploit, Third Party Advisory

Published

Aug 14, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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