CVE-2025-0620

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.

CVSS v3 6.6 MEDIUM

6.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.7 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2025-0620	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2370453	Issue Tracking Third Party Advisory
https://www.samba.org/samba/security/CVE-2025-0620.html	Vendor Advisory
http://www.openwall.com/lists/oss-security/2025/06/03/8	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*

History

13 Aug 2025, 15:12

Type	Values Removed	Values Added
References	~~() https://access.redhat.com/security/cve/CVE-2025-0620 -~~	() https://access.redhat.com/security/cve/CVE-2025-0620 - Third Party Advisory
References	~~() https://bugzilla.redhat.com/show_bug.cgi?id=2370453 -~~	() https://bugzilla.redhat.com/show_bug.cgi?id=2370453 - Issue Tracking, Third Party Advisory
References	~~() https://www.samba.org/samba/security/CVE-2025-0620.html -~~	() https://www.samba.org/samba/security/CVE-2025-0620.html - Vendor Advisory
References	~~() http://www.openwall.com/lists/oss-security/2025/06/03/8 -~~	() http://www.openwall.com/lists/oss-security/2025/06/03/8 - Mailing List, Third Party Advisory
First Time		Samba Samba samba
CPE		cpe:2.3:a:samba:samba::::::::

09 Jun 2025, 12:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-06 14:15

Updated : 2025-08-13 15:12

NVD link : CVE-2025-0620

Mitre link : CVE-2025-0620

CVE.ORG link : CVE-2025-0620

JSON object : View

Products Affected

samba

samba

CWE

CWE-552

Files or Directories Accessible to External Parties

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