CVE-2000-1056: Cisco Secure Access Control Server

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

CiscoSecure ACS Server 2.4(2) and earlier allows remote attackers to bypass LDAP authentication on the server if the LDAP server allows null passwords.

Affected products

• Cisco Secure Access Control Server: version 2.1 only; version 2.3(3) only; version 2.4(2) only

Published 2000-12-11. Last modified 2026-09-23.