CVE-2003-1115: Nortel Succession Communication Server 2000

High severity, CVSS 7.5. EPSS: 4.7% chance of exploitation in the next 30 days.

The Session Initiation Protocol (SIP) implementation in Nortel Networks Succession Communication Server 2000, when using SIP-T, allows remote attackers to cause a denial of service and possibly execute arbitrary code via crafted INVITE messages, as demonstrated by the OUSPG PROTOS c07-sip test suite.

Affected products

• Nortel Succession Communication Server 2000: any version

Published 2003-12-31. Last modified 2026-06-16.