CVE-2025-0620

low-risk
Published 2025-06-06

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.

Do I need to act?

-
0.25% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.9/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Samba

References (4)

Third Party Advisory https://access.redhat.com/security/cve/CVE-2025-0620
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2370453
Vendor Advisory https://www.samba.org/samba/security/CVE-2025-0620.html
Mailing List http://www.openwall.com/lists/oss-security/2025/06/03/8
26
/ 100
low-risk
Severity 20/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal