CVE-2026-3012

Severity CVSS v4.0:

Pending analysis

Type:

CWE-345 Insufficient Verification of Data Authenticity

Publication date:

27/05/2026

Last modified:

02/07/2026

Description

A flaw was found in Samba’s certificate auto-enrollment Group Policy handling. When certificate auto-enrollment is enabled, Samba may retrieve a CA certificate over an unencrypted HTTP connection and install it into the local trust store without proper verification. An attacker with the ability to intercept or redirect network traffic could exploit this behavior to supply a malicious certificate authority certificate, potentially allowing interception or spoofing of trusted communications.

Impact

Vector 3.x

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 8.00 HIGH
Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

8.00

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:redhat:openshift_container_platform:4.0:::::::*
cpe:2.3:a:samba:samba::::::::	4.16.0 (including)	4.21.0 (excluding)
cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-3012

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools