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Vulnerabilities CVE-2026-3012

CVE-2026-3012

High
Open
TLP:CLEAR

Samba: group policy certificate enrollment uses http:// without validation

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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.

Details

CVSS Score
8.0
CVSS Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Confidence
90%
Published
May 27, 2026
Last Modified
Aug 21, 2026
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