CVE-1999-0055: IBM Aix

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

Buffer overflows in Sun libnsl allow root access.

Affected products

• IBM Aix: version 4.2 only; version 4.2.1 only; version 4.3 only; version 4.3.1 only; version 4.3.2 only
• Sun Solaris: version 2.4 only; version 2.5 only; version 2.5.1 only; version 2.6 only
• Sun Sunos: affected versions not specified; version 5.2 only; version 5.3 only; version 5.4 only; version 5.5 only; version 5.5.1 only

Published 1998-05-14. Last modified 2026-06-16.