CVE-2025-9091

A security flaw has been discovered in Tenda AC20 16.03.08.12. Affected by this vulnerability is an unknown functionality of the file /etc_ro/shadow. The manipulation leads to hard-coded credentials. It is possible to launch the attack on the local host. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.

• CWE-259
• CWE-798

• https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.md#descriptionExploit, Third Party Advisory
• https://github.com/ZZ2266/.github.io/tree/main/AC20/hardcoded%20password/readme.mdExploit, Third Party Advisory
• https://vuldb.com/?ctiid.320359Permissions Required, VDB Entry
• https://vuldb.com/?id.320359Third Party Advisory, VDB Entry
• https://vuldb.com/?submit.632268Third Party Advisory, VDB Entry
• https://www.tenda.com.cn/Product
• https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.mdExploit, Third Party Advisory
• https://github.com/ZZ2266/.github.io/blob/main/AC20/hardcoded%20password/readme.md#descriptionExploit, Third Party Advisory

Published

Aug 17, 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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