CVE-2026-2340

6.5 MEDIUM
Published: May 27, 2026 Modified: June 15, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-2340
Source: secalert@redhat.com
Mitigation Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2447318
Source: secalert@redhat.com
Issue Tracking Third Party Advisory
https://bugzilla.samba.org/show_bug.cgi?id=15997
Source: secalert@redhat.com
Issue Tracking Vendor Advisory

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
0.5%
41th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

samba redhat