CVE-2026-1933
Last modified
CVE-2026-1933 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.86% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Openshift Container Platform | 4.0 |
| Samba | Samba | >= 4.1.0, < 4.2.2 |
| Redhat | Enterprise Linux | 7.0 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Redhat | Enterprise Linux | 10.0 |
References
- https://access.redhat.com/security/cve/CVE-2026-1933Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2447317Issue Tracking, Third Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=15992Issue Tracking, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-1933Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2447317Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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