CVE-2026-2340NVD

Vulnerability Summary

A flaw was found in Samba’s vfs_worm module. The module is intended to provide write-once, read-many (WORM) protections by preventing modification of files after a configurable grace period. Due to insufficient validation during rename operations, an authenticated user with write access to a share could overwrite a protected file by renaming a newly created file over the existing WORM-protected file.

Severity Level

MEDIUM(6.5)

Published Date

May 27, 2026

Last Modified

Sep 28, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.94%Probability

Root Weakness (CWE)

CWE-280: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics — Score 6.5 (MEDIUM)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

ConfidentialityNone

IntegrityHigh

AvailabilityNone

Affected & Patched Versions

Affected Versions

Redhat Openshift Container Platform
Samba Samba >= 4.1.0
Redhat Enterprise Linux

Patched Versions

Not provided by NVD for this CVE.

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