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CVE-2026-1933

Samba: missing access check on reparse point operations

Published: May 27, 2026Updated: Jun 30, 2026 Sources: CVE List NVD BDUCWE-284
7.1HIGH
NVD MITRE
EPSS Score
0.9%
Top 46.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Red Hat, redhat
Red Hat Enterprise Linux 10On-premOS
Operating Systems / linux-distro
OpenShift Container PlatformOn-prem
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
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
samba
oss-project·DE
sambaLibraryLibrary
Operating Systems / unix-bsd
and 10 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
Scannable·OpenVAS
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References

https://www.samba.org/samba/security/CVE-2026-1933.html
samba.org
https://ubuntu.com/security/notices/USN-8306-1
ubuntu.com
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1933.json
github.com
and 16 more references View all →
News mentions
Could not load news mentions.

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