Vulnerability in Samba
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.
EPSS: 0.006 (45.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, Third Party Advisory, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-0620?
- CVE-2025-0620 is a medium-severity vulnerability in Samba, classified under Files or Directories Accessible to External Parties. CVSS score: 4.9/10. Published 2025-06-06.
- How severe is CVE-2025-0620?
- Medium severity. CVSS v3 base score is 4.9 out of 10.