CVE-1999-1034: Att SVR4

High severity, CVSS 7.2. EPSS: 0.4% chance of exploitation in the next 30 days.

Vulnerability in login in AT&T System V Release 4 allows local users to gain privileges.

Affected products

• Att SVR4: version 4.0 only

Published 1991-05-23. Last modified 2026-06-16.