CVE-2016-9686

Name: CVE-2016-9686
Creator: NVD / NIST
Published: 2017-02-08T22:59:00.73+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.27%

Last modified Jun 17, 2026

CVE-2016-9686 is a vulnerability of currently unknown severity. The Puppet Communications Protocol (PCP) Broker incorrectly validates message header sizes. An attacker could use this to crash the PCP Broker, preventing commands from being sent to agents. EPSS estimates a 1.27% chance of exploitation in the next 30 days.

Description

The Puppet Communications Protocol (PCP) Broker incorrectly validates message header sizes. An attacker could use this to crash the PCP Broker, preventing commands from being sent to agents. This is resolved in Puppet Enterprise 2016.4.3 and 2016.5.2.

Metrics

EPSS Probability

1.27%

66.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Puppet	Puppet Enterprise	>= 2016.4.0, < 2016.4.3
Puppet	Puppet Enterprise	2016.5.1

References

https://puppet.com/security/cve/cve-2016-9686Vendor Advisory
https://puppet.com/security/cve/cve-2016-9686Vendor Advisory

Timeline

Published: Feb 8, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-9686?

How severe is CVE-2016-9686?

Severity scoring for CVE-2016-9686 is pending analysis. The EPSS model estimates a 1.27% probability of exploitation in the next 30 days.

How do I fix CVE-2016-9686?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST