CVE-2018-16853
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration.
Does this matter?
Lower severity and a low EPSS score (3.08%). Track it; it rarely justifies an emergency change on its own.
Description
Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default MIT Kerberos configuration. With this advisory the Samba Team clarify that the MIT Kerberos build of the Samba AD DC is considered experimental. Therefore the Samba Team will not issue security patches for this configuration. Additionally, Samba 4.7.12, 4.8.7 and 4.9.3 have been issued as security releases to prevent building of the AD DC with MIT Kerberos unless --with-experimental-mit-ad-dc is specified to the configure command.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 3.08% probability · 88th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- samba/samba
- Source
- secalert@redhat.com
EPSS 3.1% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/106026Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16853Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202003-52
- https://security.netapp.com/advisory/ntap-20181127-0001/Third Party Advisory
- https://www.samba.org/samba/security/CVE-2018-16853.htmlVendor Advisory
- http://www.securityfocus.com/bid/106026Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16853Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202003-52
- https://security.netapp.com/advisory/ntap-20181127-0001/Third Party Advisory
- https://www.samba.org/samba/security/CVE-2018-16853.htmlVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.