CVE-2025-0620
4.9
MEDIUM
CVSS 3.1
EPSS 0.25%
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.
How to fix CVE-2025-0620
To remediate CVE-2025-0620, upgrade the affected package to a fixed version below.
- Alpine/samba—upgrade to 4.21.6-r0 or later
- Debian/samba—upgrade to 2:4.22.2+dfsg-1 or later
Is CVE-2025-0620 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.21.6-r0
- from 0, < 2:4.22.2+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N |