CVE-2009-2869: Cisco IOS

High severity, CVSS 7.8. EPSS: 2.9% chance of exploitation in the next 30 days.

Unspecified vulnerability in Cisco IOS 12.2XNA, 12.2XNB, 12.2XNC, 12.2XND, 12.4MD, 12.4T, 12.4XZ, and 12.4YA allows remote attackers to cause a denial of service (device reload) via a crafted NTPv4 packet, aka Bug IDs CSCsu24505 and CSCsv75948.

Affected products

• Cisco IOS: version 12.2xna only; version 12.2xnb only; version 12.2xnc only; version 12.2xnd only; version 12.4md only; version 12.4t only; …

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