CVE-2008-4404: IBM Zseries

High severity, CVSS 10.0. EPSS: 4.2% chance of exploitation in the next 30 days.

The IPv6 Neighbor Discovery Protocol (NDP) implementation on IBM zSeries servers does not validate the origin of Neighbor Discovery messages, which allows remote attackers to cause a denial of service (loss of connectivity) or read private network traffic via a spoofed message that modifies the Forward Information Base (FIB), a related issue to CVE-2008-2476.

Affected products

• IBM Zseries: any version

Published 2008-10-03. Last modified 2026-06-16.