CVE-2013-6462

Exp

Stack-based buffer overflow in the bdfReadCharacters function in bitmap/bdfread.c in X.Org libXfont 1.1 through 1.4.6 allows remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via a long string in a character name in a BDF font file.

Published: 2014-01-09 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-6462 is rated High Exploit Risk (87/100): CVSS Critical severity, with high exploitation likelihood (EPSS 12.03%, 94th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.96% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2013-6462

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-6462

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 2026-03-23 10.07% 12.03% +1.96%
2 2025-12-03 14.18% 10.07% -4.11%
3 2025-10-26 — 14.18% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-6462

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2013-6462

OS Trackers for CVE-2013-6462

vendor priority summary link
debian not yet assigned CVE-2013-6462 not yet assigned priority: Debian including 1 source packages (libxfont), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-6462
gentoo high CVE-2013-6462: 1 GLSA(s) (201402-23), 1 atom(s) (x11-libs/libXfont); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2013-6462
redhat high — https://access.redhat.com/security/cve/CVE-2013-6462
ubuntu medium CVE-2013-6462 medium priority: Ubuntu including 1 source packages (libxfont), 6 status rows across 6 suites (lucid, precise, quantal, raring, saucy, upstream): released 5, needs-triage 1. https://ubuntu.com/security/CVE-2013-6462

Affected software / configurations for CVE-2013-6462

Vendor Product Version Raw CPE
x libxfont 1.1.0 cpe:2.3:a:x:libxfont:1.1.0:*:*:*:*:*:*:*
x libxfont 1.2.0 cpe:2.3:a:x:libxfont:1.2.0:*:*:*:*:*:*:*
x libxfont 1.2.1 cpe:2.3:a:x:libxfont:1.2.1:*:*:*:*:*:*:*
x libxfont 1.2.2 cpe:2.3:a:x:libxfont:1.2.2:*:*:*:*:*:*:*
x libxfont 1.2.3 cpe:2.3:a:x:libxfont:1.2.3:*:*:*:*:*:*:*
x libxfont 1.2.4 cpe:2.3:a:x:libxfont:1.2.4:*:*:*:*:*:*:*
x libxfont 1.2.5 cpe:2.3:a:x:libxfont:1.2.5:*:*:*:*:*:*:*
x libxfont 1.2.6 cpe:2.3:a:x:libxfont:1.2.6:*:*:*:*:*:*:*
x libxfont 1.2.7 cpe:2.3:a:x:libxfont:1.2.7:*:*:*:*:*:*:*
x libxfont 1.2.8 cpe:2.3:a:x:libxfont:1.2.8:*:*:*:*:*:*:*
x libxfont 1.2.9 cpe:2.3:a:x:libxfont:1.2.9:*:*:*:*:*:*:*
x libxfont 1.3.0 cpe:2.3:a:x:libxfont:1.3.0:*:*:*:*:*:*:*
x libxfont 1.3.1 cpe:2.3:a:x:libxfont:1.3.1:*:*:*:*:*:*:*
x libxfont 1.3.2 cpe:2.3:a:x:libxfont:1.3.2:*:*:*:*:*:*:*
x libxfont 1.3.3 cpe:2.3:a:x:libxfont:1.3.3:*:*:*:*:*:*:*
x libxfont 1.3.4 cpe:2.3:a:x:libxfont:1.3.4:*:*:*:*:*:*:*
x libxfont 1.4.0 cpe:2.3:a:x:libxfont:1.4.0:*:*:*:*:*:*:*
x libxfont 1.4.1 cpe:2.3:a:x:libxfont:1.4.1:*:*:*:*:*:*:*
x libxfont 1.4.2 cpe:2.3:a:x:libxfont:1.4.2:*:*:*:*:*:*:*
x libxfont 1.4.3 cpe:2.3:a:x:libxfont:1.4.3:*:*:*:*:*:*:*
x libxfont 1.4.4 cpe:2.3:a:x:libxfont:1.4.4:*:*:*:*:*:*:*
x libxfont 1.4.5 cpe:2.3:a:x:libxfont:1.4.5:*:*:*:*:*:*:*
x libxfont 1.4.6 cpe:2.3:a:x:libxfont:1.4.6:*:*:*:*:*:*:*

References for CVE-2013-6462

URL Tags
http://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=4d024ac10f964f6bd372ae0dd14f02772a6e5f63 Exploit Patch
http://lists.opensuse.org/opensuse-updates/2014-01/msg00050.html
http://lists.opensuse.org/opensuse-updates/2014-01/msg00052.html
http://lists.x.org/archives/xorg-announce/2014-January/002389.html Vendor Advisory
http://osvdb.org/101842
http://rhn.redhat.com/errata/RHSA-2014-0018.html
http://seclists.org/oss-sec/2014/q1/33
http://secunia.com/advisories/56240 Vendor Advisory
http://secunia.com/advisories/56336
http://secunia.com/advisories/56357
http://secunia.com/advisories/56371
http://www.debian.org/security/2014/dsa-2838
http://www.oracle.com/technetwork/topics/security/cpuapr2014-1972952.html
http://www.securityfocus.com/bid/64694
http://www.ubuntu.com/usn/USN-2078-1
https://exchange.xforce.ibmcloud.com/vulnerabilities/90123
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