CVE-2013-4327

systemd does not properly use D-Bus for communication with a polkit authority, which allows local users to bypass intended access restrictions by leveraging a PolkitUnixProcess PolkitSubject race condition via a (1) setuid process or (2) pkexec process, a related issue to CVE-2013-4288.

Published: 2013-10-03 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4327 is rated Low Risk (35.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.30%). 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-2013-4327

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 0.04% 0.30% +0.26%
2 2025-03-30 0.05% 0.04% -0.01%
3 2025-03-29 — 0.05% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4327

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.9 2.0 MEDIUM
AV:L/AC:M/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:M)
Exploitation needs some favorable conditions, but not exceptional ones.
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.
 3.4 10.0 [email protected]

Weakness enumeration for CVE-2013-4327

OS Trackers for CVE-2013-4327

vendor priority summary link
debian not yet assigned CVE-2013-4327 not yet assigned priority: Debian including 1 source packages (systemd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-4327
gentoo high CVE-2013-4327: 1 GLSA(s) (201406-27), 5 atom(s) (app-emulation/libvirt, net-misc/spice-gtk, net-print/hplip, sys-apps/systemd, sys-auth/polkit); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-4327
redhat high — https://access.redhat.com/security/cve/CVE-2013-4327
ubuntu medium CVE-2013-4327 medium priority: Ubuntu including 1 source packages (systemd), 5 status rows across 5 suites (lucid, precise, quantal, raring, upstream): DNE 3, needs-triage 1, released 1. https://ubuntu.com/security/CVE-2013-4327

Affected software / configurations for CVE-2013-4327

Vendor Product Version Raw CPE
systemd_project systemd <= 207 cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
canonical ubuntu_linux 13.04 cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*

References for CVE-2013-4327

URL Tags
http://www.debian.org/security/2013/dsa-2777 Third Party Advisory
http://www.openwall.com/lists/oss-security/2013/09/18/6 Mailing List Third Party Advisory
http://www.ubuntu.com/usn/USN-1961-1 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1006680 Issue Tracking Patch Third Party Advisory
cvelogic Threat Intelligence