CVE-2012-4426

6.8 MEDIUM 5% exploit odds No fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 4.7% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2012-11-21 23:55 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:44 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 4.7% in the next 30 days (EPSS).
Severity: 6.8 MEDIUM (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2012-11-21 23:55 UTC
Last modified: 2026-06-16 23:44 UTC
Exploit probability: 4.7% · EPSS, next 30 days
Weakness: CWE-134
Record status: Modified

Affected

Mcrypt ≤ 2.6.8
Mcrypt 2.6.4
Mcrypt 2.6.5
Mcrypt 2.6.6
Mcrypt 2.6.7

Attack profile CVSS 2.0 · 6.8

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: Partial
Integrity: Partial
Availability: Partial

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2012-4426.md and follow it. Check whether this project is affected by CVE-2012-4426. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record