CVE-2008-3818: Cisco Ons

High severity, CVSS 7.8. EPSS: 2% chance of exploitation in the next 30 days.

Cisco ONS 15310-CL, 15310-MA, 15327, 15454, 15454 SDH, and 15600 with software 7.0.2 through 7.0.6, 7.2.2, 8.0.x, 8.5.1, and 8.5.2 allows remote attackers to cause a denial of service (control-card reset) via a crafted TCP session.

Affected products

• Cisco Ons: version 7.0.2 only; version 7.0.4 only; version 7.0.5 only; version 7.2.0 only; version 7.2.2 only; version 8.0 only; …
• Cisco Ons 15600

Published 2009-01-16. Last modified 2026-06-16.