CVE-2012-4638: Cisco IOS

Medium severity, CVSS 4.9. EPSS: 0.3% chance of exploitation in the next 30 days.

Cisco IOS before 15.1(1)SY allows local users to cause a denial of service (device reload) by establishing an outbound SSH session, aka Bug ID CSCto00318.

Affected products

• Cisco IOS: version 15.1 only

Published 2014-04-23. Last modified 2026-06-16.