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CVE-2014-5119

45
FAUCET Score

CVE-2014-5119 describes an off-by-one error in the GNU C Library (glibc) affecting Debian Linux distributions. This vulnerability allows remote attackers to trigger a denial of service or potentially execute arbitrary code by manipulating the CHARSET environment variable and glibc's gconv transliteration modules. With a CVSS score of 7.5, it is considered highly severe, requiring low attack complexity and no authentication, with potential impacts on confidentiality, integrity, and availability. While not listed in CISA's KEV catalog, an ExploitDB entry (EDB-34421) exists, indicating public exploit code for a NUL byte off-by-one, and it has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.20CPE matchmatch criteria
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
18.10%
Probability of exploitation in next 30 days
EPSS Percentile
96.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
ExploitDB: EDB-34421 · Aug 27, 2014
This CVE's current EPSS score of 0.1810 is in the 95th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

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 (8)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: glibc-0:2.5-118.el5_10.3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5.6 Long LifeFixed in: glibc-0:2.5-58.el5_6.5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5.9 Extended Update SupportFixed in: glibc-0:2.5-107.el5_9.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: glibc-0:2.12-1.132.el6_5.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.2 Advanced Update SupportFixed in: glibc-0:2.12-1.47.el6_2.13
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6.4 Extended Update SupportFixed in: glibc-0:2.12-1.107.el6_4.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: glibc-0:2.17-55.el7_0.1
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux Extended Update Support 5.6Fixed in: glibc

Vendor Advisories (1)

redhatCVE-2014-5119Important

glibc: off-by-one error leading to a heap-based buffer overflow flaw in __gconv_translit_find()

Jul 14, 2014

References

googleprojectzero.blogspot.com / 2014/08/the-poisoned-nul-byte-2014-edition.html
Third Party Advisory
linux.oracle.com / errata/ELSA-2015-0092.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2014-09/msg00017.html
Mailing ListThird Party Advisory
rhn.redhat.com / errata/RHSA-2014-1118.html
Third Party Advisory
code.google.com / p/google-security-research/issues/detail
Third Party Advisory
seclists.org / fulldisclosure/2014/Aug/69
Mailing ListThird Party Advisory
secunia.com / advisories/60345
Third Party Advisory
secunia.com / advisories/60358
Third Party Advisory
secunia.com / advisories/60441
Third Party Advisory
secunia.com / advisories/61074
Third Party Advisory
secunia.com / advisories/61093
Third Party Advisory
rhn.redhat.com / errata/RHSA-2014-1110.html
Third Party Advisory
security.gentoo.org / glsa/201602-02
Third Party Advisory
sourceware.org / bugzilla/show_bug.cgi
Issue TrackingThird Party Advisory
tools.cisco.com / security/center/content/CiscoSecurityNotice/CVE-2014-5119
Third Party Advisory
www-01.ibm.com / support/docview.wss
Third Party Advisory
debian.org / security/2014/dsa-3012
Third Party Advisory
mandriva.com / security/advisories
Third Party Advisory
openwall.com / lists/oss-security/2014/07/14/1
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2014/08/13/5
Mailing ListThird Party Advisory
securityfocus.com / bid/68983
Third Party AdvisoryVDB Entry
securityfocus.com / bid/69738
Third Party AdvisoryVDB Entry