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Vulnerability details: VCID-cgpy-fg55-t7gy
Vulnerability ID VCID-cgpy-fg55-t7gy
Aliases CVE-2018-16853
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-400 Uncontrolled Resource Consumption
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16853.json
epss 0.03714 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03714 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03714 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03714 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03714 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03714 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
epss 0.03783 https://api.first.org/data/v1/epss?cve=CVE-2018-16853
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2018-16853
cvssv3 5.9 https://nvd.nist.gov/vuln/detail/CVE-2018-16853
archlinux High https://security.archlinux.org/AVG-823
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16853.json
https://api.first.org/data/v1/epss?cve=CVE-2018-16853
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16853
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16853
https://security.netapp.com/advisory/ntap-20181127-0001/
https://www.samba.org/samba/security/CVE-2018-16853.html
http://www.securityfocus.com/bid/106026
1647246 https://bugzilla.redhat.com/show_bug.cgi?id=1647246
ASA-201811-22 https://security.archlinux.org/ASA-201811-22
AVG-823 https://security.archlinux.org/AVG-823
cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
CVE-2018-16853 https://nvd.nist.gov/vuln/detail/CVE-2018-16853
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16853.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-16853
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-16853
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.87519
EPSS Score 0.03714
Published At Sept. 13, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:32:41.906850+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.20/main.json 37.0.0