CVE-2025-0620

Published: Jun 6, 2025

Modified: Mar 18, 2026

PUBLISHED

CVSS v3.1

4.9

MEDIUM

Description

A flaw was found in Samba. The smbd service daemon does not pick up group membership changes when re-authenticating an expired SMB session. This issue can expose file shares until clients disconnect and then connect again.

Vendor	Product	Versions
Unknown	samba	affected `4.21.0 - < 4.21.6`
Red Hat	Red Hat Enterprise Linux 10	All versions
Red Hat	Red Hat Enterprise Linux 6	All versions
Red Hat	Red Hat Enterprise Linux 6	All versions
Red Hat	Red Hat Enterprise Linux 7	All versions
Red Hat	Red Hat Enterprise Linux 8	All versions
Red Hat	Red Hat Enterprise Linux 9	All versions
Red Hat	Red Hat OpenShift Container Platform 4	All versions

Weaknesses (CWE)

CWE-552

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

https://access.redhat.com/security/cve/CVE-2025-0620

vdb-entry

x_refsource_REDHAT

RHBZ#2370453

issue-tracking

x_refsource_REDHAT

https://www.samba.org/samba/security/CVE-2025-0620.html

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CVE-2025-0620

Description

Affected Products

Weaknesses (CWE)

CVSS v3.1 Details

References