CVE-2010-4686: Cisco IOS

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

CallManager Express (CME) on Cisco IOS before 15.0(1)XA1 does not properly handle SIP TRUNK traffic that contains rate bursts and a "peculiar" request size, which allows remote attackers to cause a denial of service (memory consumption) by sending this traffic over a long duration, aka Bug ID CSCtb47950.

Affected products

• Cisco IOS: before 15.0\(1\)xa1 (fixed in 15.0\(1\)xa1)

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