How severe is CVE-2018-6512?

CVE-2018-6512 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-6512 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6512?

CVE-2018-6512 primarily affects Puppet Pe-razor-server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-6512?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-6512 published?

CVE-2018-6512 was published on 2018-06-11 and last updated on 2026-06-17.

CVE-2018-6512

CVE-2018-6512 is a critical-severity vulnerability in Puppet Pe-razor-server with a CVSS 3.x base score of 9.8. 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-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Puppet Pe-razor-server
Published: 2018-06-11
Last modified: 2026-06-17

Description

The previous version of Puppet Enterprise 2018.1 is vulnerable to unsafe code execution when upgrading pe-razor-server. Affected releases are Puppet Enterprise: 2018.1.x versions prior to 2018.1.1 and razor-server and pe-razor-server prior to 1.9.0.0.

Frequently asked questions

What is CVE-2018-6512?: The previous version of Puppet Enterprise 2018.1 is vulnerable to unsafe code execution when upgrading pe-razor-server. Affected releases are Puppet Enterprise: 2018.1.x versions prior to 2018.1.1 and razor-server and pe-razor-server prior to 1.9.0.0.
How severe is CVE-2018-6512?: CVE-2018-6512 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-6512 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6512?: CVE-2018-6512 primarily affects Puppet Pe-razor-server. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-6512?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-6512 published?: CVE-2018-6512 was published on 2018-06-11 and last updated on 2026-06-17.

References

https://puppet.com/security/cve/CVE-2018-6512

Affected products (3)

cpe:2.3:a:puppet:pe-razor-server:*:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*
cpe:2.3:a:puppet:razor-server:*:*:*:*:*:*:*:*

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