CVE-2018-6514: In Puppet Agent 1.10.x prior to 1.10.13, Puppet Agent 5.3.x prior to 5.3.7, Puppet Agent 5.5.x prior to 5.5.2,

This month

HIGH 7.8UPGRADE

CVE-2018-6514 is a high-severity flaw (CVSS 7.8) affecting puppet. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Puppet Agent 1.10.x prior to 1.10.13, Puppet Agent 5.3.x prior to 5.3.7, Puppet Agent 5.5.x prior to 5.5.2, Facter on Windows is vulnerable to a DLL preloading attack, which could lead to a privilege escalation.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-426
Published	2018-06-11
Last modified	2026-06-17

Publisher (CNA): Perforce · Vendor: puppet

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-06-11 20:29 UTCPublished CVE record published
2026-06-17 02:01 UTCUpdated Record last modified

puppet puppet UPGRADE

Affected: >= 1.10.0 and < 1.10.13 · >= 5.3.0 and < 5.3.7 · >= 5.5.0 and < 5.5.2

Fixed in: 1.10.13, 5.3.7, 5.5.2

Safe to downgrade to: a release before 1.10.0

1. Check installed version

apt-cache policy puppet || rpm -q puppet || puppet --version

2. UPGRADE to 1.10.13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade puppet

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade puppet

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 1.10.0 (Debian / Ubuntu)

apt-cache madison puppet sudo apt install puppet=<VERSION_BEFORE_1.10.0> sudo apt-mark hold puppet

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list puppet sudo dnf downgrade puppet-<VERSION_BEFORE_1.10.0> sudo dnf versionlock add puppet

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-6514?

puppet: upgrade to 1.10.13, 5.3.7, 5.5.2. Exact commands for each OS are on this page.

Is CVE-2018-6514 being exploited?

CVE-2018-6514 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-6514 affect?

CVE-2018-6514 affects puppet. Severity is high (CVSS 7.8). In Puppet Agent 1.10.x prior to 1.10.13, Puppet Agent 5.3.x prior to 5.3.7, Puppet Agent 5.5.x prior to 5.5.2, Facter on Windows is vulnerable to a DLL preloading attack, which could lead to a privilege escalation.

How urgent is CVE-2018-6514?

Priority 42/100. High severity

Software pages

Windows vulnerabilities

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References

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