CVE-2007-4292: Cisco IOS

High severity, CVSS 9.3. EPSS: 2.9% chance of exploitation in the next 30 days.

Multiple memory leaks in Cisco IOS 12.0 through 12.4 allow remote attackers to cause a denial of service (device crash) via a malformed SIP packet, aka (1) CSCsf11855, (2) CSCeb21064, (3) CSCse40276, (4) CSCse68355, (5) CSCsf30058, (6) CSCsb24007, and (7) CSCsc60249.

Affected products

• Cisco IOS: version 12.0 only; version 12.1 only; version 12.2 only; version 12.3 only; version 12.4 only

Published 2007-08-09. Last modified 2026-06-16.