CVE-2006-6418: HP TRU64

High severity, CVSS 7.2. EPSS: 0.5% chance of exploitation in the next 30 days.

Buffer overflow in the POSIX Threads library (libpthread) on HP Tru64 UNIX 4.0F PK8, 4.0G PK4, and 5.1A PK6 allows local users to gain root privileges via a long PTHREAD_CONFIG environment variable.

Affected products

• HP TRU64: version 4.0f only; version 4.0g only; version 5.1a only

Published 2006-12-10. Last modified 2026-06-16.