CVE-2018-16852

Name: CVE-2018-16852
Creator: NVD / NIST
Published: 2018-11-28T14:29:00.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.23%

Last modified Jun 17, 2026

CVE-2018-16852 is a vulnerability of currently unknown severity. Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. EPSS estimates a 2.23% chance of exploitation in the next 30 days.

Description

Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service.

Metrics

EPSS Probability

2.23%

80.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Samba	Samba	>= 4.9.0, < 4.9.3

References

http://www.securityfocus.com/bid/106024Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16852Issue 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-2018-16852.htmlPatch, Vendor Advisory
http://www.securityfocus.com/bid/106024Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16852Issue 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-2018-16852.htmlPatch, Vendor Advisory

Timeline

Published: Nov 28, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-16852?

How severe is CVE-2018-16852?

Severity scoring for CVE-2018-16852 is pending analysis. The EPSS model estimates a 2.23% probability of exploitation in the next 30 days.

How do I fix CVE-2018-16852?

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.

Are you affected by CVE-2018-16852?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST