CVE-2018-5730
LOWEPSS 82th pctlDescription
MIT krb5 1.6 or later allows an authenticated kadmin with permission to add principals to an LDAP Kerberos database to circumvent a DN containership check by supplying both a "linkdn" and "containerdn" database argument, or by supplying a DN string which is a left extension of a container DN string but is not hierarchically within the container DN.
How to fix
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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 82% of all known CVEs.
References
Related Vulnerabilities
Other CWE-90 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2016-9299 | Critical | 9.8 | 97% | - | - |
| CVE-2017-14596 | Critical | 9.8 | 6.9% | - | - |
| CVE-2016-8750 | Medium | 6.5 | 5.2% | - | Fix |
| CVE-2021-43350 | Critical | 9.8 | 4.8% | - | Fix |
| CVE-2017-4927 | High | 7.5 | 2.3% | - | Fix |
| CVE-2024-27310 | Medium | 5.3 | 2.3% | - | Fix |
Common questions
How do I fix CVE-2018-5730?
Published advisories record a fix for 9 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2018-5730 being actively exploited?
Not that we know of. CVE-2018-5730 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.2% is the estimated probability that it will be exploited in the next 30 days. That is higher than 82% of all scored CVEs.
How severe is CVE-2018-5730?
CVE-2018-5730 has a CVSS v3 base score of 3.8, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2018-5730 affect?
Published advisories record a fix for krb5-debuginfo (Amazon), krb5-devel (Amazon), krb5-libs (Amazon), krb5-pkinit (Amazon), and 5 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.