CVE-2023-20012

A vulnerability in the CLI console login authentication of Cisco Nexus 9300-FX3 Series Fabric Extender (FEX) when used in UCS Fabric Interconnect deployments could allow an unauthenticated attacker with physical access to bypass authentication. This vulnerability is due to the improper implementation of the password validation function. An attacker could exploit this vulnerability by logging in to the console port on an affected device. A successful exploit could allow the attacker to bypass authentication and execute a limited set of commands local to the FEX, which could cause a device reboot and denial of service (DoS) condition.

• CWE-287
• CWE-287

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-elyfex-dos-gfvcByxVendor Advisory
• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-elyfex-dos-gfvcByxVendor Advisory

Published

Feb 23, 2023

Last Modified

Jun 17, 2026

Status

Modified

• 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-2023-20007A vulnerability in the web-based management interface of Cis…7.2
• CVE-2023-20008A vulnerability in the CLI of Cisco TelePresence CE and Room…7.1
• CVE-2023-20009A vulnerability in the Web UI and administrative CLI of the …7.2
• CVE-2023-2001An issue has been discovered in GitLab CE/EE affecting all v…4.3
• CVE-2023-20010A vulnerability in the web-based management interface of Cis…8.8
• CVE-2023-20011A vulnerability in the web-based management interface of Cis…8.8
• CVE-2023-20013Multiple vulnerabilities in Cisco Intersight Private Virtual…9.1
• CVE-2023-20014A vulnerability in the DNS functionality of Cisco Nexus Dash…7.5
• CVE-2023-20015A vulnerability in the CLI of Cisco Firepower 4100 Series, C…6.7
• CVE-2023-20016A vulnerability in the backup configuration feature of Cisco…6.5
• CVE-2023-20017Multiple vulnerabilities in Cisco Intersight Private Virtual…9.1
• CVE-2023-20018A vulnerability in the web-based management interface of Cis…6.5