CVE-1999-1574: IBM Aix

High severity, CVSS 7.5. EPSS: 3% chance of exploitation in the next 30 days.

Buffer overflow in the lex routines of nslookup for AIX 4.3 may allow attackers to cause a core dump and possibly execute arbitrary code via "long input strings."

Affected products

• IBM Aix: version 4.3.0 only

Published 1998-07-06. Last modified 2026-06-16.