Is CVE-2012-5642 in the CISA KEV catalog?

No. CVE-2012-5642 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2012-5642?

CVE-2012-5642 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2012-5642?

CVE-2012-5642 has an EPSS score of 3.12% (86th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2012-5642?

Upgrade fail2ban on debian 11 to 0.8.6-3wheezy1 or later.

CVE & CISA-KEV Catalog

CVE-2012-5642

HIGHEPSS 86th pctl

7.5

CVSS v2

NVD

Description

server/action.py in Fail2ban before 0.8.8 does not properly handle the content of the matches tag, which might allow remote attackers to trigger unsafe behavior in a custom action file via unspecified symbols in this content.

How to fix

Remediation Available

fail2banDebian

Fixed in:0.8.6-3wheezy1CVE-2012-5642

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

3.12%probability of exploitation in 30 days

86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Patch1

github.com

Other references8

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.