vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2018-1139

HIGH
8.1
CVSS Score
Published: August 22, 2018 at 02:00 PM UTC
Updated: June 17, 2026 at 01:50 AM UTC
5 products affected across 3 vendorsUbuntu LinuxEnterprise Linux DesktopEnterprise Linux Server

Using samba by The Samba Team?

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

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
HIGH8.1
Exploit prediction
EPSS 3%

Description

A flaw was found in the way samba before 4.7.9 and 4.8.4 allowed the use of weak NTLMv1 authentication even when NTLMv1 was explicitly disabled. A man-in-the-middle attacker could use this flaw to read the credential and other details passed between the samba server and client.

Affected

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

Ubuntu Linux· Canonicalrubygems
95%
14.0416.0418.04
Enterprise Linux Desktop· Red Hatrubygems
95%
7.0
Enterprise Linux Server· Red Hatrubygems
95%
7.0
Enterprise Linux Workstation· Red Hatrubygems
95%
7.0
SAMBA· Samba
95%
v < 4.7.9v < 4.8.44.7.0 ≤ v < 4.7.94.8.0 ≤ v < 4.8.4
Affected range stops below 4.7.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.8.4, so it looks safe — our inference, not a vendor statement

References (9)

VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/105084
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:2612
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:2613
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3056
x_refsource_CONFIRMIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1139
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202003-52
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20180814-0001/
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/3738-1/

CVSS

8.1HIGH[email protected]
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20CWE-522

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.

Create accountSign in
Free plan, no card