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.

Published: 2013-10-10 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4396 is rated Moderate Risk (55.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.97%). Review affected assets and schedule remediation.

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-2013-4396

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 2026-03-09 1.57% 1.97% +0.40%
2 2025-03-30 2.19% 1.57% -0.61%
3 2025-03-29 — 2.19% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4396

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2013-4396

OS Trackers for CVE-2013-4396

vendor priority summary link
debian not yet assigned CVE-2013-4396 not yet assigned priority: Debian including 1 source packages (xorg-server), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-4396
gentoo high CVE-2013-4396: 1 GLSA(s) (201405-07), 1 atom(s) (x11-base/xorg-server); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-4396
redhat high — https://access.redhat.com/security/cve/CVE-2013-4396
ubuntu medium CVE-2013-4396 medium priority: Ubuntu including 3 source packages (xorg-server, xorg-server-lts-quantal, xorg-server-lts-raring), 15 status rows across 5 suites (lucid, precise, quantal, raring, upstream): DNE 6, released 6, needs-triage 2, ignored 1. https://ubuntu.com/security/CVE-2013-4396

NVD evaluator notes for CVE-2013-4396

Comment: Per: https://bugzilla.redhat.com/show_bug.cgi?id=1014561 "' A malicious, authorized client could use this flaw to crash the X.Org server or, potentially, execute arbitrary code with root privileges.'

Affected software / configurations for CVE-2013-4396

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

References for CVE-2013-4396

cvelogic Threat Intelligence