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CVE-2013-6424

16
FAUCET Score

CVE-2013-6424 describes an integer underflow vulnerability in the xTrapezoidValid macro within X.Org's render/picture.h, affecting products like Canonical, Debian, OpenSUSE, and Pixman. This flaw allows unauthenticated, remote attackers to trigger a denial of service (crash) due to a negative bottom value, with a CVSS score of 5.0 indicating a medium severity. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or Nuclei, or entries in ExploitDB. Furthermore, the vulnerability has garnered minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.31.2CPE matchmatch criteria
cpe:2.3:a:pixman:pixman:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
12.2CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
12.3CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*

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: xorg-x11-server-0:1.1.1-48.101.el5_10.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: xorg-x11-server-0:1.13.0-23.1.el6_5
View patch

Vendor Advisories (1)

redhatCVE-2013-6424Important

xorg-x11-server: integer underflow when handling trapezoids

Jul 16, 2013

References

lists.opensuse.org / opensuse-updates/2013-12/msg00127.html
Mailing ListThird Party Advisory
lists.x.org / archives/xorg-devel/2013-October/037996.html
Patch
rhn.redhat.com / errata/RHSA-2013-1868.html
Broken Link
bugs.freedesktop.org / show_bug.cgi
Issue TrackingPatchVendor Advisory
bugs.launchpad.net / ubuntu/+source/xorg-server/+bug/1197921
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/201701-64
Third Party Advisory
security.gentoo.org / glsa/201710-30
Third Party Advisory
debian.org / security/2013/dsa-2822
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-2500-1
Third Party Advisory