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CVE-2012-4426

23
FAUCET Score

CVE-2012-4426 describes multiple format string vulnerabilities in mcrypt 2.6.8 and earlier, specifically within errors.c and mcrypt.c. This vulnerability carries a CVSS score of 6.8, indicating a medium severity, where an unauthenticated attacker could exploit it with moderate complexity over a network to cause a denial of service or potentially execute arbitrary code. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.8CPE matchmatch criteria
cpe:2.3:a:mcrypt:mcrypt:*:*:*:*:*:*:*:*
2.6.4CPE matchmatch criteria
cpe:2.3:a:mcrypt:mcrypt:2.6.4:*:*:*:*:*:*:*
2.6.5CPE matchmatch criteria
cpe:2.3:a:mcrypt:mcrypt:2.6.5:*:*:*:*:*:*:*
2.6.6CPE matchmatch criteria
cpe:2.3:a:mcrypt:mcrypt:2.6.6:*:*:*:*:*:*:*
2.6.7CPE matchmatch criteria
cpe:2.3:a:mcrypt:mcrypt:2.6.7:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.74%
Probability of exploitation in next 30 days
EPSS Percentile
90.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0474 is in the 89th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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