CVE-2009-2865: Cisco IOS

High severity, CVSS 7.6. EPSS: 5.5% chance of exploitation in the next 30 days.

Buffer overflow in the login implementation in the Extension Mobility feature in the Unified Communications Manager Express (CME) component in Cisco IOS 12.4XW, 12.4XY, 12.4XZ, and 12.4YA allows remote attackers to execute arbitrary code or cause a denial of service via crafted HTTP requests, aka Bug ID CSCsq58779.

Affected products

• Cisco IOS: version 12.4xw only; version 12.4xy only; version 12.4xz only; version 12.4ya only
• Cisco Unified Communications Manager Express: any version

Published 2009-09-28. Last modified 2026-06-16.