CVE-2005-4499: Cisco Adaptive Security Appliance Software

High severity, CVSS 7.5. EPSS: 2.6% chance of exploitation in the next 30 days.

The Downloadable RADIUS ACLs feature in Cisco PIX and VPN 3000 concentrators, when creating an ACL on the Cisco Secure Access Control Server (CS ACS), generates a random internal name for an ACL that is also used as a hidden user name and password, which allows remote attackers to gain privileges by sniffing the username from the cleartext portion of a RADIUS session, then using the password to log in to another device that uses CS ACS.

Affected products

Cisco Adaptive Security Appliance Software: version 7.0 only; version 7.0(4) only; version 7.0.1.4 only; version 7.0.4.3 only
Cisco Pix ASA Ids: any version
Cisco Pix Firewall: version 6.2.2_.111 only; version 6.2.3_(110) only; version 6.3.3_(133) only; any version
Cisco Pix Firewall 501: any version
Cisco Pix Firewall 506: any version
Cisco Pix Firewall 515: any version
Cisco Pix Firewall 515e: any version
Cisco Pix Firewall 520: any version
Cisco Pix Firewall 525: any version
Cisco Pix Firewall 535: any version
Cisco Pix Firewall Software: version 2.7 only; version 3.0 only; version 3.1 only; version 4.0 only; version 4.1(6) only; version 4.1(6b) only; …
Cisco Secure Access Control Server: any version; version 2.0 only; version 2.1 only; version 2.3 only; version 2.3.5.1 only; version 2.3.6.1 only; …
Cisco VPN 3000 Concentrator Series Software: version 2.0 only; version 2.5.2.a only; version 2.5.2.b only; version 2.5.2.c only; version 2.5.2.d only; version 2.5.2.f only; …
Cisco VPN 3001 Concentrator: any version
Cisco VPN 3002 Hardware Client: any version
Cisco VPN 3005 Concentrator Software: version 4.0.1 only
Cisco VPN 3015 Concentrator: any version
Cisco VPN 3020 Concentrator: any version
Cisco VPN 3030 Concentator: any version; version 4.7.1 only; version 4.7.1.f only
Cisco VPN 3060 Concentrator: any version
Cisco VPN 3080 Concentrator: any version

Published 2005-12-22. Last modified 2026-06-16.