CVE-2005-0943: Cisco VPN 3000 Concentrator Series Software

Medium severity, CVSS 5.0. EPSS: 1.6% chance of exploitation in the next 30 days.

Cisco VPN 3000 series Concentrator running firmware 4.1.7.A and earlier allows remote attackers to cause a denial of service (device reload or drop user connection) via a crafted HTTPS packet.

Affected products

• 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 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
• Cisco VPN 3060 Concentrator: any version
• Cisco VPN 3080 Concentrator: any version

Published 2005-03-30. Last modified 2026-06-16.