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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-2340 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://access.redhat.com/errata/RHSA-2026:22963 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2026:25049 Red Hat, Inc.
https://access.redhat.com/errata/RHSA-2026:25979 Red Hat, Inc.
https://access.redhat.com/security/cve/CVE-2026-2340 Red Hat, Inc. Mitigation  Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=2447318 Red Hat, Inc. Issue Tracking  Third Party Advisory 
https://bugzilla.samba.org/show_bug.cgi?id=15997 Red Hat, Inc. Issue Tracking  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-280 Improper Handling of Insufficient Permissions or Privileges Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-2340
NVD Published Date:
05/27/2026
NVD Last Modified:
06/15/2026
Source:
Red Hat, Inc.