How severe is CVE-2013-4396?

CVE-2013-4396 has a CVSS 2.0 base score of 6.5, rated medium severity.

Is CVE-2013-4396 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4396?

CVE-2013-4396 primarily affects X X.org X11. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4396?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-4396 published?

CVE-2013-4396 was published on 2013-10-10 and last updated on 2026-06-16.

CVE-2013-4396

CVE-2013-4396 is a medium-severity vulnerability in X X.org X11 with a CVSS 2.0 base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 2.0 base score 6.5)
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: X X.org X11
Published: 2013-10-10
Last modified: 2026-06-16

Description

Use-after-free vulnerability in the doImageText function in dix/dixfonts.c in the xorg-server module before 1.14.4 in X.Org X11 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted ImageText request that triggers memory-allocation failure.

Frequently asked questions

What is CVE-2013-4396?: Use-after-free vulnerability in the doImageText function in dix/dixfonts.c in the xorg-server module before 1.14.4 in X.Org X11 allows remote authenticated users to cause a denial of service (daemon crash) or possibly execute arbitrary code via a crafted ImageText request that triggers memory-allocation failure.
How severe is CVE-2013-4396?: CVE-2013-4396 has a CVSS 2.0 base score of 6.5, rated medium severity.
Is CVE-2013-4396 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4396?: CVE-2013-4396 primarily affects X X.org X11. In total, 22 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4396?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4396 published?: CVE-2013-4396 was published on 2013-10-10 and last updated on 2026-06-16.

References

Affected products (22)

cpe:2.3:a:x:x.org_x11:6.0:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.1:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.3:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.4:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.5.1:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.6:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.7:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.8:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.8.1:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.8.2:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:6.9.0:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.0:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.1:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.2:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.3:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.4:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.5:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.5:rc1:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.6:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.6:rc1:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.7:*:*:*:*:*:*:*
cpe:2.3:a:x:x.org_x11:7.7:rc1:*:*:*:*:*:*

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CVE-2012-0064 — Medium (CVSS 4.6): xkeyboard-config before 2.5 in X.Org before 7.6 enables certain XKB debugging functions by default, which allows…
CVE-2012-1699 — Low (CVSS 3.6): The ProcSetEventMask function in difs/events.c in the xfs font server for X.Org X11R6 through X11R6.6 and XFree86…

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Other CWE-399 (Resource Management Errors) vulnerabilities

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CVE-2015-0339 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0335 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2015-0333 — Critical (CVSS 10.0): Adobe Flash Player before 13.0.0.277 and 14.x through 17.x before 17.0.0.134 on Windows and OS X and before…
CVE-2014-4121 — Critical (CVSS 10.0): Microsoft .NET Framework 2.0 SP2, 3.5, 3.5.1, 4, 4.5, 4.5.1, and 4.5.2 does not properly parse internationalized…
CVE-2014-0560 — Critical (CVSS 10.0): Use-after-free vulnerability in Adobe Reader and Acrobat 10.x before 10.1.12 and 11.x before 11.0.09 on Windows and OS…

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