CVE-2026-4254

A weakness has been identified in Tenda AC8 up to 16.03.50.11. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks.

• CWE-119
• CWE-121
• CWE-787

• https://github.com/digitalandrew/tenda_ac8_v5/blob/main/CVE_Report_Tenda_AC8_SysToolChangePwd_BOF.mdExploit, Third Party Advisory
• https://vuldb.com/?ctiid.351212Permissions Required, VDB Entry
• https://vuldb.com/?id.351212Third Party Advisory, VDB Entry
• https://vuldb.com/?submit.771773Third Party Advisory, VDB Entry
• https://www.tenda.com.cn/Product

Published

Mar 16, 2026

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.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-42534NLnet Labs Unbound up to and including version 1.25.0 has a …5.3
• CVE-2026-42535A path handling issue in mod_dav_fs in Apache 2.4.67 and ear…9.1
• CVE-2026-42536Heap-based Buffer Overflow vulnerability in Apache HTTP Serv…7.5
• CVE-2026-42537Remote Code Execution via JDBC URL Injection in Apache Range…9.8
• CVE-2026-42538IRIS is a web collaborative platform that helps incident res…6.3
• CVE-2026-42539IRIS is a web collaborative platform that helps incident res…6.5
• CVE-2026-42540IRIS is a web collaborative platform that helps incident res…4.3
• CVE-2026-42541Kubewarden is a policy engine for Kubernetes. Prior to , An …4.3
• CVE-2026-42542TDengine is an open source, time-series database optimized f…7.5
• CVE-2026-42543IRIS is a web collaborative platform that helps incident res…4.3
• CVE-2026-42544Granian is a Rust HTTP server for Python applications. From …7.5
• CVE-2026-42545Granian is a Rust HTTP server for Python applications. From …5.9