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Vulnerability record · CVE-2014-6040 · published 5 December 2014

CVE-2014-6040: Gnu glibc memory buffer overflow vulnerability

Gnu · Glibc

GNU C Library (aka glibc) before 2.20 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via a multibyte character value of "0xffff" to the iconv function when converting (1) IBM933, (2) IBM935, (3) IBM937, (4) IBM939, or (5) IBM1364 encoded data to UTF-8.

5.0 CVSS 2.0 Medium EPSS 6.6% · top 6.4% CWE-119 · Memory buffer overflow
5.0CVSS 2.0 base score
6.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
24References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

GNU C Library (aka glibc) before 2.20 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via a multibyte character value of "0xffff" to the iconv function when converting (1) IBM933, (2) IBM935, (3) IBM937, (4) IBM939, or (5) IBM1364 encoded data to UTF-8.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://linux.oracle.com/errata/ELSA-2015-0016.html
http://secunia.com/advisories/62100
http://secunia.com/advisories/62146
http://ubuntu.com/usn/usn-2432-1 PatchVendor Advisory
http://www.debian.org/security/2015/dsa-3142 Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2014:175
http://www.openwall.com/lists/oss-security/2014/08/29/3
http://www.openwall.com/lists/oss-security/2014/09/02/1 Exploit
http://www.securityfocus.com/bid/69472
https://security.gentoo.org/glsa/201602-02
https://sourceware.org/bugzilla/show_bug.cgi?id=17325 Exploit
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=41488498b6
http://linux.oracle.com/errata/ELSA-2015-0016.html
http://secunia.com/advisories/62100
http://secunia.com/advisories/62146
http://ubuntu.com/usn/usn-2432-1 PatchVendor Advisory
http://www.debian.org/security/2015/dsa-3142 Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2014:175
http://www.openwall.com/lists/oss-security/2014/08/29/3
http://www.openwall.com/lists/oss-security/2014/09/02/1 Exploit
http://www.securityfocus.com/bid/69472
https://security.gentoo.org/glsa/201602-02
https://sourceware.org/bugzilla/show_bug.cgi?id=17325 Exploit
https://sourceware.org/git/gitweb.cgi?p=glibc.git%3Ba=commitdiff%3Bh=41488498b6

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2014-6040), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.