CVE-2026-1933
HighCVSS 7.1Exploitation Probability (EPSS)
Elevated risk54th percentile - higher than 54% of all known CVEs
Summary
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.
Risk Assessment
This flaw allows modification of SMB-visible file behavior, including converting files into symbolic links or other reparse point types, potentially leading to unauthorized filesystem changes and privilege escalation.
Recommendation
Immediately update Samba to a patched version (e.g., 4.20.x or later) and review read-only share configurations for unnecessary filesystem write permissions.
Original NVD description (English source)
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.