How severe is CVE-2016-2787?

CVE-2016-2787 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2016-2787 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-2787?

CVE-2016-2787 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-2016-2787?

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

When was CVE-2016-2787 published?

CVE-2016-2787 was published on 2017-02-13 and last updated on 2026-06-17.

CVE-2016-2787

CVE-2016-2787 is a medium-severity vulnerability in Puppet Puppet Enterprise with a CVSS 3.x base score of 5.3. 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-284.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Puppet Puppet Enterprise
Published: 2017-02-13
Last modified: 2026-06-17

Description

The Puppet Communications Protocol in Puppet Enterprise 2015.3.x before 2015.3.3 does not properly validate certificates for the broker node, which allows remote non-whitelisted hosts to prevent runs from triggering via unspecified vectors.

Frequently asked questions

What is CVE-2016-2787?: The Puppet Communications Protocol in Puppet Enterprise 2015.3.x before 2015.3.3 does not properly validate certificates for the broker node, which allows remote non-whitelisted hosts to prevent runs from triggering via unspecified vectors.
How severe is CVE-2016-2787?: CVE-2016-2787 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2016-2787 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-2787?: CVE-2016-2787 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-2016-2787?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2016-2787 published?: CVE-2016-2787 was published on 2017-02-13 and last updated on 2026-06-17.

References

https://puppet.com/security/cve/CVE-2016-2787

Affected products (2)

cpe:2.3:a:puppet:puppet_enterprise:2015.3.2:*:*:*:*:*:*:*
cpe:2.3:a:puppetlabs:puppet_enterprise:2015.3:*:*:*:*:*:*:*

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