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HIGH · 8.0

CVE-2026-3012

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 ...

Vulnerability 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.

CVSS Score

8.0

HIGH

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

Affected Products

VendorProductVersions
RedhatOpenshift Container Platform4.0
SambaSamba>= 4.16.0, < 4.21.0
RedhatEnterprise Linux7.0

Related Weaknesses (CWE)

CWE-345

References

FAQ

What is CVE-2026-3012?

CVE-2026-3012 is a vulnerability with a CVSS score of 8.0 (HIGH). 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 ...

How severe is CVE-2026-3012?

CVE-2026-3012 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-3012?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Openshift Container Platform, Samba Samba, Redhat Enterprise Linux.