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CVE-2026-3012

medium

A flaw was found in Samba’s certificate auto-enrollment Group Policy handling.

Vendor / product: Redhat — openshift container platform

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
6.8
6.8 (CVSS v3.1)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-05-27 11:16
Modified: 2026-11-04 23:17
NVD status: Modified
Last synced 1 hour ago
Verified against the source API 2026-11-04 23:38 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

redhat / openshift_container_platform 4.0
samba / samba ≥4.16.0 <4.21.0
redhat / enterprise_linux 7.0, 9.0

Weakness classification (CWE)

CWE-345

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://bugzilla.samba.org/show_bug.cgi?id=16003
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2026-3012
Patch / mitigation: https://bugzilla.samba.org/show_bug.cgi?id=16003
Patch / mitigation: https://access.redhat.com/security/cve/CVE-2026-3012

References

Data sources

NVD CVE API 2.0 — fetched 2026-11-04 23:38 UTC · record ↗

Learn the basics

Understanding CVEs and CVSS Scores

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