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CVE-2026-1933

Samba: missing access check on reparse point operations

Published: May 27, 2026Updated: Sep 18, 2026 Sources: CVE List NVD BDUCWE-284
7.1HIGH
NVD MITRE
EPSS Score
0.9%
Top 42.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:LA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-284NVD-CWE-noinfo

Affected Products

Red Hat Inc.
commercial·USaka redhat, Red Hat
OpenShift Container PlatformOn-prem
Operating Systems / linux-distro
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 10.0 Extended Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-OnOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsOn-premOS
Operating Systems / linux-distro
Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsOn-premOS
Operating Systems / linux-distro
samba
oss-project·DE
sambaLibraryLibrary
Operating Systems / unix-bsd
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
Canonical Ltd.
commercial·GBaka canonical
UbuntuOn-premOS
Operating Systems / linux-distro
Samba Team
oss-project·AUaka samba
SambaLibraryLibrary
OSS Libraries / generic-library
and 21 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Is your org exposed to CVE-2026-1933?Request an assessment to establish which checks are appropriate for your systems. Check my exposure

References

https://access.redhat.com/errata/RHSA-2026:22644
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:22963
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:25049
access.redhat.com
and 27 more references View all →

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