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.

Database specific

{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/0xxx/CVE-2025-0620.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "4.21.0"
                },
                {
                    "fixed": "4.21.6"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ],
    "cna_assigner": "redhat",
    "cwe_ids": [
        "CWE-552"
    ]
}

References

Affected packages

Git / github.com/samba-team/samba

Affected ranges

Type

GIT

Repo

https://github.com/samba-team/samba

Events

Introduced

1c7d4b5b388ae2647732ed54834d5547a8c1357a

Fixed

b901f39a1d0f221eb2fa7872323eedc7e71e9ead

Introduced

7b3228b88eea776d092be2338fc70135f2e128f0

Fixed

64a23714e6d89c349795dd5b07a094e53f3d4a52

Database specific

{
    "extracted_events": [
        {
            "introduced": "4.21.0"
        },
        {
            "fixed": "4.21.6"
        },
        {
            "introduced": "4.22.0"
        },
        {
            "fixed": "4.22.2"
        }
    ],
    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE"
}

Affected versions

samba-4.*

samba-4.21.0

samba-4.21.1

samba-4.21.2

samba-4.21.3

samba-4.21.4

samba-4.21.5

samba-4.22.0

samba-4.22.1

Database specific

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-0620.json"