CVE-2005-2496

The xntpd ntp (ntpd) daemon before 4.2.0b, when run with the -u option and using a string to specify the group, uses the group ID of the user instead of the group, which causes xntpd to run with different privileges than intended.

Published: 2005-09-02 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-2496 is rated Low Risk (31.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.45%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2005-2496

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 0.07% 0.45% +0.38%
2 2023-03-07 1.28% 0.07% -1.21%
3 2023-02-13 — 1.28% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-2496

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P 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:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2005-2496

OS Trackers for CVE-2005-2496

vendor priority summary link
debian medium CVE-2005-2496 medium priority: Debian including 1 source packages (ntp), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2005-2496
redhat low — https://access.redhat.com/security/cve/CVE-2005-2496
ubuntu medium CVE-2005-2496 medium priority: Ubuntu including 1 source packages (ntp), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): not-affected 3, needs-triage 1. https://ubuntu.com/security/CVE-2005-2496

Affected software / configurations for CVE-2005-2496

Vendor Product Version Raw CPE
dave_mills ntpd <= 4.2.0.a.2004-06-17_4.fc3 cpe:2.3:a:dave_mills:ntpd:*:*:*:*:*:*:*:*

References for CVE-2005-2496

cvelogic Threat Intelligence