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CVE-2013-6425

16
FAUCET Score

CVE-2013-6425 describes an integer underflow vulnerability in the pixman_trapezoid_valid macro within Pixman versions prior to 0.32.0, impacting products like X.Org server and cairo, as well as various Linux distributions including Canonical, Debian, openSUSE, and Red Hat. This vulnerability carries a CVSS score of 5.0 (medium severity) due to its network-based attack vector and low complexity, allowing an unauthenticated attacker to cause a denial of service (system crash) with partial availability impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.32.0CPE matchmatch criteria
cpe:2.3:a:pixman:pixman:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
12.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
13.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:13.04:*:*:*:*:*:*:*
13.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:13.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.88%
Probability of exploitation in next 30 days
EPSS Percentile
85.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0288 is in the 79th percentile among its peer group of 23,701 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, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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 redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: pixman-0:0.22.0-2.2.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: pixman-0:0.26.2-5.1.el6_5
View patch

Vendor Advisories (1)

redhatCVE-2013-6425Important

pixman: integer underflow when handling trapezoids

Jul 16, 2013

References

cgit.freedesktop.org / pixman/commit
PatchThird Party Advisory
lists.freedesktop.org / archives/pixman/2013-November/003109.html
PatchThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-01/msg00001.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-01/msg00005.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-01/msg00008.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-updates/2014-01/msg00097.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2013-1869.html
Third Party Advisory
bugs.freedesktop.org / show_bug.cgi
Issue TrackingPatchThird Party Advisory
bugs.launchpad.net / ubuntu/+source/xorg-server/+bug/1197921
Issue TrackingPatchThird Party Advisory
debian.org / security/2013/dsa-2823
Third Party Advisory
openwall.com / lists/oss-security/2013/12/03/8
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2013/12/04/8
Mailing ListThird Party Advisory
ubuntu.com / usn/USN-2047-1
Third Party Advisory