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CVE-2014-6040

22
FAUCET Score

CVE-2014-6040 describes an out-of-bounds read vulnerability in the GNU C Library (glibc) versions prior to 2.20. This flaw allows an unauthenticated, remote attacker to trigger a denial of service by providing a specially crafted multibyte character value (0xffff) to the iconv function when converting specific IBM-encoded data to UTF-8. The vulnerability has a CVSS score of 5.0, indicating a medium severity, with low attack complexity and a potential impact of system availability loss. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.19CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:2.0:*:*:*:*:*:*:*
2.0.1CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:2.0.1:*:*:*:*:*:*:*
2.0.2CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:2.0.2:*:*:*:*:*:*:*
2.0.3CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:2.0.3:*:*:*:*:*:*:*

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
6.56%
Probability of exploitation in next 30 days
EPSS Percentile
93.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0656 is in the 90th percentile among its peer group of 23,725 CVEs.

Social Chatter

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 (5)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc-0:2.12-1.149.el6_6.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc-0:2.17-78.el7
View patch
ubuntupatch availablevia nvd_reference
View patch
debianvendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: glibc

Vendor Advisories (1)

redhatCVE-2014-6040Moderate

glibc: crash in code page decoding functions (IBM933, IBM935, IBM937, IBM939, IBM1364)

Aug 28, 2014

References

linux.oracle.com / errata/ELSA-2015-0016.html
secunia.com / advisories/62100
secunia.com / advisories/62146
security.gentoo.org / glsa/201602-02
sourceware.org / bugzilla/show_bug.cgi
Exploit
sourceware.org / git/gitweb.cgi
ubuntu.com / usn/usn-2432-1
PatchVendor Advisory
debian.org / security/2015/dsa-3142
Vendor Advisory
mandriva.com / security/advisories
openwall.com / lists/oss-security/2014/08/29/3
openwall.com / lists/oss-security/2014/09/02/1
Exploit
securityfocus.com / bid/69472