CVE-2007-3149

sudo, when linked with MIT Kerberos 5 (krb5), does not properly check whether a user can currently authenticate to Kerberos, which allows local users to gain privileges, in a manner unintended by the sudo security model, via certain KRB5_ environment variable settings. NOTE: another researcher disputes this vulnerability, stating that the attacker must be "a user, who can already log into your system, and can already use sudo."

Published: 2007-06-11 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-3149 is rated Low Risk (38.9/100): CVSS High severity, with low exploitation likelihood (EPSS 0.36%). 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-2007-3149

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 0.05% 0.36% +0.32%
2 2025-03-30 0.05% 0.05% -0.00%
3 2025-03-29 — 0.05% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-3149

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-2007-3149

OS Trackers for CVE-2007-3149

vendor priority summary link
debian unimportant CVE-2007-3149 unimportant priority: Debian including 1 source packages (sudo), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2007-3149
redhat high — https://access.redhat.com/security/cve/CVE-2007-3149
ubuntu medium CVE-2007-3149 medium priority: Ubuntu including 1 source packages (sudo), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): not-affected 3, needs-triage 1. https://ubuntu.com/security/CVE-2007-3149

Vendor comments (NVD) for CVE-2007-3149

  • Red Hat (2007-06-11T00:00:00)

    Not vulnerable. Versions of sudo package shipped with Red Hat Enterprise Linux versions 2.1, 3, 4 and 5 are linked with PAM support and never use libkrb5 authentication.

Affected software / configurations for CVE-2007-3149

Vendor Product Version Raw CPE
mit kerberos_5 — cpe:2.3:a:mit:kerberos_5:-:*:*:*:*:*:*:*
todd_miller sudo 1.6.8_p12 cpe:2.3:a:todd_miller:sudo:1.6.8_p12:*:*:*:*:*:*:*

References for CVE-2007-3149

cvelogic Threat Intelligence