CVE-2006-6418

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.

Published: 2006-12-10 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-6418 is rated Moderate Risk (43/100): CVSS High severity, with low exploitation likelihood (EPSS 0.51%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-6418

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.10% 0.51% +0.41%
2 2026-06-06 0.18% 0.10% -0.08%
3 2025-03-17 — 0.18% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-6418

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2006-6418

OS Trackers for CVE-2006-6418

vendor priority summary link
alpine — CVE-2006-6418: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-2006-6418

Affected software / configurations for CVE-2006-6418

Vendor Product Version Raw CPE
hp tru64 4.0f cpe:2.3:o:hp:tru64:4.0f:pk8:*:*:*:*:*:*
hp tru64 4.0g cpe:2.3:o:hp:tru64:4.0g:pk4:*:*:*:*:*:*
hp tru64 5.1a cpe:2.3:o:hp:tru64:5.1a:pk6:*:*:*:*:*:*

References for CVE-2006-6418

cvelogic Threat Intelligence