CVE-2018-16857

HIGH
7.4
CVSS Score
Published: November 28, 2018 at 02:00 PM UTC
Updated: June 17, 2026 at 01:44 AM UTC
1 product affected across 1 vendorSAMBA

Using samba by [UNKNOWN]?

Get instant alerts when new vulnerabilities affect samba - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH7.4
Exploit prediction
EPSS 2%

Description

Samba from version 4.9.0 and before version 4.9.3 that have AD DC configurations watching for bad passwords (to restrict brute forcing of passwords) in a window of more than 3 minutes may not watch for bad passwords at all. The primary risk from this issue is with regards to domains that have been upgraded from Samba 4.8 and earlier. In these cases the manual testing done to confirm an organisation's password policies apply as expected may not have been re-done after the upgrade.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.9.0 ≤ v < 4.9.34.9.3
Affected range stops below 4.9.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (5)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/106024
x_refsource_CONFIRMIssue TrackingMitigationThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16857
Vendor Advisoryx_refsource_GENTOO
https://security.gentoo.org/glsa/202003-52
x_refsource_CONFIRMMitigationPatchVendor Advisory
https://www.samba.org/samba/security/CVE-2018-16857.html

CVSS

7.4HIGHredhat
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-358

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card