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.
Affected products
samba: samba
References4
- www.samba.org/samba/security/CVE-2025-0620.html Vendor Advisory
- access.redhat.com/security/cve/CVE-2025-0620 Third Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2370453 Issue TrackingThird Party Advisory
- www.openwall.com/lists/oss-security/2025/06/03/8 Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
4.9
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N - EPSS — exploit probability
- 1% percentile: 57 · as of 7 November 2026
- CWE
- CWE-552
Could this be exploited in your environment?
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