CVE-2005-1021

Memory leak in Secure Shell (SSH) in Cisco IOS 12.0 through 12.3, when authenticating against a TACACS+ server, allows remote attackers to cause a denial of service (memory consumption) via an incorrect username or password.

• CWE-399

• http://secunia.com/advisories/14854Patch, Vendor Advisory
• http://www.cisco.com/warp/public/707/cisco-sa-20050406-ssh.shtmlVendor Advisory
• http://www.osvdb.org/15303
• http://www.securityfocus.com/bid/13042
• http://www.securitytracker.com/alerts/2005/Apr/1013655.htmlPatch
• https://exchange.xforce.ibmcloud.com/vulnerabilities/19991
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5687
• http://secunia.com/advisories/14854Patch, Vendor Advisory
• http://www.cisco.com/warp/public/707/cisco-sa-20050406-ssh.shtmlVendor Advisory
• http://www.osvdb.org/15303
• http://www.securityfocus.com/bid/13042
• http://www.securitytracker.com/alerts/2005/Apr/1013655.htmlPatch
• https://exchange.xforce.ibmcloud.com/vulnerabilities/19991
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5687

Published

May 2, 2005

Last Modified

Jun 16, 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.
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