CVE-2010-4683: Cisco IOS

High severity, CVSS 7.8. EPSS: 3.2% chance of exploitation in the next 30 days.

Memory leak in Cisco IOS before 15.0(1)XA5 might allow remote attackers to cause a denial of service (memory consumption) by sending a crafted SIP REGISTER message over UDP, aka Bug ID CSCtg41733.

Affected products

• Cisco IOS: before 15.0\(1\)xa5 (fixed in 15.0\(1\)xa5)

Published 2011-01-07. Last modified 2026-06-16.