CVE-2009-0626: Cisco IOS

High severity, CVSS 7.8. EPSS: 2% chance of exploitation in the next 30 days.

The SSLVPN feature in Cisco IOS 12.3 through 12.4 allows remote attackers to cause a denial of service (device reload or hang) via a crafted HTTPS packet.

Affected products

• Cisco IOS: version 12.3 only; version 12.3b only; version 12.3bc only; version 12.3bw only; version 12.3ja only; version 12.3jea only; …

Published 2009-03-27. Last modified 2026-06-16.