How severe is CVE-2018-11749?

CVE-2018-11749 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-2018-11749 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11749?

CVE-2018-11749 affects Puppet Puppet Enterprise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11749?

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-2018-11749 published?

CVE-2018-11749 was published on 2018-08-24 and last updated on 2026-06-17.

CVE-2018-11749

CVE-2018-11749 is a critical-severity vulnerability in Puppet Puppet Enterprise 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-319.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 5.0
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Puppet Puppet Enterprise
Published: 2018-08-24
Last modified: 2026-06-17

Description

When users are configured to use startTLS with RBAC LDAP, at login time, the user's credentials are sent via plaintext to the LDAP server. This affects Puppet Enterprise 2018.1.3, 2017.3.9, and 2016.4.14, and is fixed in Puppet Enterprise 2018.1.4, 2017.3.10, and 2016.4.15. It scored an 8.5 CVSS score.

Frequently asked questions

What is CVE-2018-11749?: When users are configured to use startTLS with RBAC LDAP, at login time, the user's credentials are sent via plaintext to the LDAP server. This affects Puppet Enterprise 2018.1.3, 2017.3.9, and 2016.4.14, and is fixed in Puppet Enterprise 2018.1.4, 2017.3.10, and 2016.4.15. It scored an 8.5 CVSS score.
How severe is CVE-2018-11749?: CVE-2018-11749 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-2018-11749 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11749?: CVE-2018-11749 affects Puppet Puppet Enterprise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11749?: 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-2018-11749 published?: CVE-2018-11749 was published on 2018-08-24 and last updated on 2026-06-17.

References

https://puppet.com/security/cve/cve-2018-11749

Affected products (1)

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

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