🛡️ CVE-2026-2340 — enterprise-linux

🟡 CVSS 6.5 — Medium ✅ No Known Exploit CWE-280 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity high, availability none.

Affected software

CVE-2026-2340 is recorded against 4 packages.

  • enterprise-linux
  • openshift-container-platform
  • samba (from 4.1.0)
  • unknown

Timeline and source

Published on 27 May 2026 and last revised on 2 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

access.redhat.com
access.redhat.com
access.redhat.com
access.redhat.com
access.redhat.com
access.redhat.com
access.redhat.com
access.redhat.com
access.redhat.com
access.redhat.com
access.redhat.com
bugzilla.redhat.com
bugzilla.samba.org

CVE-2026-2340 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE CWE-280
Public Exploit ✅ No
Source NVD
Published 2026-05-27
Updated 2026-08-11
Modified 2026-07-02
Fix URL N/A

Affected Packages

Software From version Fixed in
enterprise-linux
openshift-container-platform
samba 4.1.0
unknown

Similar Threats

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