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CVE-2013-4327

18
FAUCET Score

CVE-2013-4327 describes a race condition vulnerability in systemd's D-Bus communication with polkit, allowing local users to bypass access restrictions through setuid or pkexec processes. This critical flaw impacts various versions of systemd, Debian, and Ubuntu Linux. With a CVSS score of 6.9, it has a low attack complexity and requires local access, but can lead to complete compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 207CPE matchmatch criteria
cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
13.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.9MEDIUM

AV:L/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.30%
Probability of exploitation in next 30 days
EPSS Percentile
22.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0030 is in the 17th percentile among its peer group of 1,595 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

redhatpatch availablevia nvd_reference
View patch
ubuntuvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2013-4327Important

systemd: insecure calling of polkit

Sep 18, 2013

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
debian.org / security/2013/dsa-2777
Third Party Advisory
openwall.com / lists/oss-security/2013/09/18/6
Mailing ListThird Party Advisory
ubuntu.com / usn/USN-1961-1
Vendor Advisory