CVE-2026-3012

Medium

Elevated severity or exploit probability.

CVSS base

8.0 HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

EPSS — probability of exploitation (30 days)

0.3%

18.3th percentile

CISA KEV

Not listed

Weakness / dates

CWE-345

Published 2026-05-27 · modified 2026-09-18

CVSS breakdown

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Attack Vector	A	Adjacent
Attack Complexity	H	High
Privileges Required	N	None
User Interaction	N	None
Scope	C	Changed
Confidentiality	H	High
Integrity	H	High
Availability	N	None

Timeline

2026-05-27 — Published (NVD)
2026-09-18 — Last modified (NVD)

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.

Affected

redhat samba

References

Official: NVD · CVE.org