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Vulnerability record · CVE-2012-4426 · published 21 November 2012

CVE-2012-4426: Mcrypt vulnerability

MMcrypt · Mcrypt

Multiple format string vulnerabilities in mcrypt 2.6.8 and earlier might allow user-assisted remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via vectors involving (1) errors.c or (2) mcrypt.c.

6.8 CVSS 2.0 Medium EPSS 4.7% · top 8.5% CWE-134 · CWE-134
6.8CVSS 2.0 base score
4.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References
16 Jun 2026Last modified by NVD

Description

Multiple format string vulnerabilities in mcrypt 2.6.8 and earlier might allow user-assisted remote attackers to cause a denial of service (crash) or possibly execute arbitrary code via vectors involving (1) errors.c or (2) mcrypt.c.

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

Affected products

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

References

LinkTags
http://www.openwall.com/lists/oss-security/2012/09/06/8
http://www.openwall.com/lists/oss-security/2012/09/06/9
http://www.openwall.com/lists/oss-security/2012/09/10/5
http://www.openwall.com/lists/oss-security/2012/09/13/22
http://www.securityfocus.com/bid/55557
http://www.openwall.com/lists/oss-security/2012/09/06/8
http://www.openwall.com/lists/oss-security/2012/09/06/9
http://www.openwall.com/lists/oss-security/2012/09/10/5
http://www.openwall.com/lists/oss-security/2012/09/13/22
http://www.securityfocus.com/bid/55557

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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-2012-4426), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.