Vulnerability in Samba
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 install it into the local trust store w…
EPSS: 0.003 (17.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N.
Affected products
- Samba
- Red Hat Enterprise Linux 10 — versions 0:4.23.5-109.el10_2
- Red Hat Enterprise Linux 10.0 Extended Update Support — versions 0:4.21.3-114.el10_0.1
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8 — versions 0:4.19.4-16.el8_10
- Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support — versions 0:4.15.5-16.el8_6.1
- Red Hat Enterprise Linux 8.6 Extended Update Support Long-life Add-on — versions 0:4.15.5-16.el8_6.1
- Red Hat Enterprise Linux 8.8 Telecommunications Update Service — versions 0:4.17.5-7.el8_8.1
- Red Hat Enterprise Linux 8.8 Update Services For Sap Solutions — versions 0:4.17.5-7.el8_8.1
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry, Mitigation, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Third Party Advisory, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (Mitigation, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Issue Tracking)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Issue Tracking)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2026-3012?
- CVE-2026-3012 is a high-severity vulnerability in Samba, classified under Insufficient Verification of Data Authenticity. CVSS score: 8.0/10. Published 2026-05-27.
- How severe is CVE-2026-3012?
- High severity. CVSS v3 base score is 8.0 out of 10.