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.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-17307 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.
Ubuntu USN Ubuntu USN USN-7564-1 Samba vulnerability
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Thu, 08 Jan 2026 03:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'}

cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}


Wed, 13 Aug 2025 15:15:00 +0000

Type Values Removed Values Added
First Time appeared Samba
Samba samba
CPEs cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*
Vendors & Products Samba
Samba samba

Fri, 06 Jun 2025 21:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Fri, 06 Jun 2025 14:45:00 +0000

Type Values Removed Values Added
References

Fri, 06 Jun 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 06 Jun 2025 13:30:00 +0000

Type Values Removed Values Added
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.
Title Samba: smbd doesn't pick up group membership changes when re-authenticating an expired smb session
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-552
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 6.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-01-08T03:03:56.405Z

Reserved: 2025-01-21T15:54:28.429Z

Link: CVE-2025-0620

cve-icon Vulnrichment

Updated: 2025-06-06T13:11:50.526Z

cve-icon NVD

Status : Modified

Published: 2025-06-06T14:15:21.247

Modified: 2026-01-08T04:15:52.687

Link: CVE-2025-0620

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-06-03T00:00:00Z

Links: CVE-2025-0620 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses