CVE-2011-1625: Cisco IOS

Medium severity, CVSS 5.4. EPSS: 0.7% chance of exploitation in the next 30 days.

Cisco IOS 12.2, 12.3, 12.4, 15.0, and 15.1, when the data-link switching (DLSw) feature is configured, allows remote attackers to cause a denial of service (device crash) by sending a sequence of malformed packets and leveraging a "narrow timing window," aka Bug ID CSCtf74999, a different vulnerability than CVE-2007-0199, CVE-2008-1152, and CVE-2009-0629.

Affected products

• Cisco IOS: version 12.2 only; version 12.3 only; version 12.4 only; version 15.0 only; version 15.1 only

Published 2011-08-18. Last modified 2026-06-16.