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.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://access.redhat.com/security/cve/CVE-2026-3012 Mitigation, Third Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=16003 Issue Tracking, Mitigation, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-3012 Mitigation, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 2
- References+1 references (now 51)NVD modified 2026-10-15 17:17
- First seenCVSS 6.8 · redhat, sambaNVD modified 2026-10-08 21:17
Affected (CPE criteria) 4
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
References 51
- https://access.redhat.com/errata/RHSA-2026:22644 Issue Tracking
- https://access.redhat.com/errata/RHSA-2026:22963 Issue Tracking
- https://access.redhat.com/errata/RHSA-2026:25049
- https://access.redhat.com/errata/RHSA-2026:25979
- https://access.redhat.com/errata/RHSA-2026:28053
- https://access.redhat.com/errata/RHSA-2026:28054
- https://access.redhat.com/errata/RHSA-2026:28055
- https://access.redhat.com/errata/RHSA-2026:28056
- https://access.redhat.com/errata/RHSA-2026:28057
- https://access.redhat.com/errata/RHSA-2026:29863
- https://access.redhat.com/errata/RHSA-2026:56786
- https://access.redhat.com/errata/RHSA-2026:56853
- https://access.redhat.com/errata/RHSA-2026:56911
- https://access.redhat.com/errata/RHSA-2026:57483
- https://access.redhat.com/errata/RHSA-2026:59831
- https://access.redhat.com/errata/RHSA-2026:60019
- https://access.redhat.com/errata/RHSA-2026:62409
- https://access.redhat.com/errata/RHSA-2026:62549
- https://access.redhat.com/errata/RHSA-2026:65839
- https://access.redhat.com/errata/RHSA-2026:65851
- https://access.redhat.com/errata/RHSA-2026:65907
- https://access.redhat.com/errata/RHSA-2026:67857
- https://access.redhat.com/errata/RHSA-2026:70586
- https://access.redhat.com/errata/RHSA-2026:77320
- https://access.redhat.com/security/cve/CVE-2026-3012 Mitigation, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2447319 Issue Tracking, Third Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=16003 Issue Tracking, Mitigation, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:22644 Issue Tracking
- https://access.redhat.com/errata/RHSA-2026:22963 Issue Tracking
- https://access.redhat.com/errata/RHSA-2026:25049
- https://access.redhat.com/errata/RHSA-2026:25979
- https://access.redhat.com/errata/RHSA-2026:28053
- https://access.redhat.com/errata/RHSA-2026:28054
- https://access.redhat.com/errata/RHSA-2026:28055
- https://access.redhat.com/errata/RHSA-2026:28056
- https://access.redhat.com/errata/RHSA-2026:28057
- https://access.redhat.com/errata/RHSA-2026:29863
- https://access.redhat.com/errata/RHSA-2026:56786
- https://access.redhat.com/errata/RHSA-2026:56853
- https://access.redhat.com/errata/RHSA-2026:56911
- https://access.redhat.com/errata/RHSA-2026:57483
- https://access.redhat.com/errata/RHSA-2026:59831
- https://access.redhat.com/errata/RHSA-2026:60019
- https://access.redhat.com/errata/RHSA-2026:62409
- https://access.redhat.com/errata/RHSA-2026:62549
- https://access.redhat.com/errata/RHSA-2026:65839
- https://access.redhat.com/errata/RHSA-2026:65851
- https://access.redhat.com/errata/RHSA-2026:65907
- https://access.redhat.com/security/cve/CVE-2026-3012 Mitigation, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2447319 Issue Tracking, Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3012.json