CVE-2026-1933
HIGHSamba: missing access check on reparse point operations
Title source: cnaDescription
A flaw was found in Samba’s handling of NTFS-style reparse points on shares configured with read only = yes. Due to missing SMB-layer access checks, authenticated users with underlying filesystem write permissions may create or delete reparse point metadata through SMB operations even on read-only exports. This could allow modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types.
References (6)
Core 6
Core References
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:22963
https://access.redhat.com/errata/RHSA-2026:22963
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:25049
https://access.redhat.com/errata/RHSA-2026:25049
Vendor Advisory vendor-advisory
x_refsource_redhat
RHSA-2026:25979
https://access.redhat.com/errata/RHSA-2026:25979
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-1933
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2447317
https://bugzilla.redhat.com/show_bug.cgi?id=2447317
Scores
CVSS v3
7.1
EPSS
0.0048
EPSS Percentile
37.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-284
Status
published
Products (15)
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 10
0:4.23.5-109.el10_2
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Red Hat/Red Hat Enterprise Linux 9
0:4.23.5-10.el9_8
Red Hat/Red Hat Enterprise Linux 9.6 Extended Update Support
0:4.21.3-14.el9_6.1
Red Hat/Red Hat OpenShift Container Platform 4
redhat/enterprise_linux
7.0
... and 5 more
Published
May 27, 2026
Tracked Since
May 27, 2026