VULNERABILITY INTELLIGENCE

CVE-2018-1139

CVSS score8.1 HIGH
EPSS probability3.10%
CISA KEVNot currently listed
Published2018-08-22
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • CWE-20: Improper Input Validation
  • CWE-522: Insufficiently Protected Credentials

Primary references