CVE record · CVE-2026-109411

Samba: access control bypass via vfs_ceph_rgw case-insensitive open

CVSS 8.1 HighEPSS 0.0065 · 51st percentile

Published by the CVE Program (CNA: redhat) at 28 Oct 2026, 19:17 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Samba	Samba Package name: samba https://gitlab.com/samba-team/samba	affected 4.25.0 to before 4.25.1 semver Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 10 Package name: samba https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 6 Package name: samba https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 6 Package name: samba4 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 7 Package name: samba https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 8 Package name: samba https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat Enterprise Linux 9 Package name: samba https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-8 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat OpenShift Container Platform 4 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat OpenShift Container Platform 5 Package name: openshift/ose-rhel-coreos-9 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected

Identifiers: CVE-2026-109411
CNA: redhat
Weakness (CWE): CWE-178
Tags: Samba
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Red Hat OpenShift Container Platform 4
Red Hat OpenShift Container Platform 5
CWE-178
Published: 28 Oct 2026
Updated: 4 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.1	High	3.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0065, the 51st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

28 Oct 2026, 19:17 UTC Confirmed by the CVE List
28 Oct 2026, 20:17 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/security/cve/CVE-2026-109411 vdb-entryredhat
attachments.samba.org/attachment.cgi?id=19294
attachments.samba.org/attachment.cgi?id=19295
bugzilla.redhat.com/show_bug.cgi?id=2552136 issue-trackingredhat
bugzilla.samba.org/show_bug.cgi?id=16276

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.