How severe is CVE-2015-4100?

CVE-2015-4100 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2015-4100 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4100?

CVE-2015-4100 primarily affects Puppet Puppet Enterprise. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4100?

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

When was CVE-2015-4100 published?

CVE-2015-4100 was published on 2017-12-21 and last updated on 2026-06-17.

CVE-2015-4100

CVE-2015-4100 is a medium-severity vulnerability in Puppet Puppet Enterprise with a CVSS 3.x base score of 6.8. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 4.9
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Puppet Puppet Enterprise
Published: 2017-12-21
Last modified: 2026-06-17

Description

Puppet Enterprise 3.7.x and 3.8.0 might allow remote authenticated users to manage certificates for arbitrary nodes by leveraging a client certificate trusted by the master, aka a "Certificate Authority Reverse Proxy Vulnerability."

Frequently asked questions

What is CVE-2015-4100?: Puppet Enterprise 3.7.x and 3.8.0 might allow remote authenticated users to manage certificates for arbitrary nodes by leveraging a client certificate trusted by the master, aka a "Certificate Authority Reverse Proxy Vulnerability."
How severe is CVE-2015-4100?: CVE-2015-4100 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2015-4100 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-4100?: CVE-2015-4100 primarily affects Puppet Puppet Enterprise. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-4100?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-4100 published?: CVE-2015-4100 was published on 2017-12-21 and last updated on 2026-06-17.

References

https://puppet.com/security/cve/CVE-2015-4100

Affected products (2)

cpe:2.3:a:puppet:puppet_enterprise:*:*:*:*:*:*:*:*
cpe:2.3:a:puppet:puppet_enterprise:3.8.0:*:*:*:*:*:*:*

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