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01 Record

CVE-2018-16852

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

MediumPUBLISHEDCNA: redhat
CNA base score6.5 CVSS v3.xCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

02 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

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
2.22% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 82.4% of scored records. A rank, not a probability.
NVD base score
4.4 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-11-28 14:00Z7 YR AGO
Last updated
2024-08-05 10:32Z2 YR AGO
Reserved
2018-09-11
Assigning CNA
redhat
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-476NULL Pointer DereferenceBase
Data version
5.1
Document digest
25dee9117f58e162598a27768ff71aaad09f07fe825f0afa437aa06fccdc2c78

05 Affected products

VendorProductVersionsPlatforms
[UNKNOWN]samba4.9.3—

06 References

07 Fixed in

Arch Linux

  • samba
    Fixed in 4.9.3-1

Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.

Debian 12

  • samba
    Fixed in 2:4.9.2+dfsg-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • samba
    Fixed in 2:4.9.2+dfsg-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • samba
    Fixed in 2:4.9.2+dfsg-2

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.