CVE-2026-1933

Advisory lineage Upstream: 0 Downstream: 17
Modified
Published: 27 May 2026, 12:28
Last modified:15 Jul 2026, 01:21

Vulnerability Summary

Overall Risk (default)
medium
29/100
CVSS Score
7.1 HIGH
v3.1 (cve.org)
EPSS Score
0.86% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 May 2026, 12:28
Published
Vulnerability first disclosed
15 Jul 2026, 01:21
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS Trends

Current EPSS score: 0.86%• Percentile: 54%

Techniques & Countermeasures

  • CWE-284•Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

  • redhat•enterprise_linux

    7.0 | 8.0 | 9.0 | 10.0

  • redhat•openshift_container_platform

    4.0

  • Unknown•Samba

    ≥ 4.1.0, < 4.2.2

References (14)