CVE-1999-1203: Ascend Multilink Ppp For Isdn

Medium severity, CVSS 5.0. EPSS: 1.6% chance of exploitation in the next 30 days.

Multilink PPP for ISDN dialup users in Ascend before 4.6 allows remote attackers to cause a denial of service via a spoofed endpoint identifier.

Affected products

• Ascend Multilink Ppp For Isdn: up to and including 4.6

Published 1999-02-12. Last modified 2026-06-16.