How severe is CVE-2012-3866?

CVE-2012-3866 has a CVSS 2.0 base score of 2.1, rated low severity.

Is CVE-2012-3866 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-3866?

CVE-2012-3866 primarily affects Puppet. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2012-3866?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-3866 published?

CVE-2012-3866 was published on 2012-08-06 and last updated on 2026-06-16.

CVE-2012-3866

CVE-2012-3866 is a low-severity vulnerability in Puppet with a CVSS 2.0 base score of 2.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-264.

Key facts

Severity: Low (CVSS 2.0 base score 2.1)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Puppet
Published: 2012-08-06
Last modified: 2026-06-16

Description

lib/puppet/defaults.rb in Puppet 2.7.x before 2.7.18, and Puppet Enterprise before 2.5.2, uses 0644 permissions for last_run_report.yaml, which allows local users to obtain sensitive configuration information by leveraging access to the puppet master server to read this file.

Frequently asked questions

What is CVE-2012-3866?: lib/puppet/defaults.rb in Puppet 2.7.x before 2.7.18, and Puppet Enterprise before 2.5.2, uses 0644 permissions for last_run_report.yaml, which allows local users to obtain sensitive configuration information by leveraging access to the puppet master server to read this file.
How severe is CVE-2012-3866?: CVE-2012-3866 has a CVSS 2.0 base score of 2.1, rated low severity.
Is CVE-2012-3866 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-3866?: CVE-2012-3866 primarily affects Puppet. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2012-3866?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-3866 published?: CVE-2012-3866 was published on 2012-08-06 and last updated on 2026-06-16.

References

Affected products (17)

cpe:2.3:a:puppet:puppet:2.7.2:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.3:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.4:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.5:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.6:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.8:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.9:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.10:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.11:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.12:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.13:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.14:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet:2.7.16:*:*:*:*:*:*:*
cpe:2.3:a:puppetlabs:puppet:*:*:*:*:*:*:*:*
cpe:2.3:a:puppetlabs:puppet:2.7.0:*:*:*:*:*:*:*
cpe:2.3:a:puppetlabs:puppet:2.7.1:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*

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