CVE-2008-1159: Cisco IOS S

High severity, CVSS 7.1. EPSS: 2.5% chance of exploitation in the next 30 days.

Multiple unspecified vulnerabilities in the SSH server in Cisco IOS 12.4 allow remote attackers to cause a denial of service (device restart) via unknown vectors, aka Bug ID (1) CSCsk42419, (2) CSCsk60020, and (3) CSCsh51293.

Affected products

• Cisco IOS S: version 12.4 only
• Cisco IOS T: version 12.4 only
• Cisco IOS XR: version 12.4 only; any version

Published 2008-05-22. Last modified 2026-06-16.