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CVE-2013-6462

35
FAUCET Score

CVE-2013-6462 describes a stack-based buffer overflow in the bdfReadCharacters function within X.Org libXfont versions 1.1 through 1.4.6. This vulnerability allows remote attackers to trigger a denial of service or potentially execute arbitrary code by supplying an overly long string in a BDF font file's character name. With a CVSS score of 9.3, it is considered critical, indicating a network-based attack with medium complexity that can lead to complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.1.0CPE matchmatch criteria
cpe:2.3:a:x:libxfont:1.1.0:*:*:*:*:*:*:*
1.2.0CPE matchmatch criteria
cpe:2.3:a:x:libxfont:1.2.0:*:*:*:*:*:*:*
1.2.1CPE matchmatch criteria
cpe:2.3:a:x:libxfont:1.2.1:*:*:*:*:*:*:*
1.2.2CPE matchmatch criteria
cpe:2.3:a:x:libxfont:1.2.2:*:*:*:*:*:*:*
1.2.3CPE matchmatch criteria
cpe:2.3:a:x:libxfont:1.2.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

AV:N/AC:M/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
10.25%
Probability of exploitation in next 30 days
EPSS Percentile
95.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.1025 is in the 76th percentile among its peer group of 8,913 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 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: libXfont-0:1.2.2-1.0.5.el5_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libXfont-0:1.4.5-3.el6_5
View patch

Vendor Advisories (1)

redhatCVE-2013-6462Important

libXfont: stack-based buffer overflow flaw when parsing Glyph Bitmap Distribution Format (BDF) fonts

Jan 7, 2014

References

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