Dashboard / CVE-2025-0620

CVE-2025-0620

MEDIUM
MEDIUM Priority: 0.04 BB Relevance: 55/100
Published: 2025-06-06 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: None
S: Unchanged
C: High
I: None
A: None

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.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
— — 4.21.0 < 4.21.6
samba samba 4.21.0 – 4.21.6

References & Advisories (4)

https://bugzilla.redhat.com/show_bug.cgi?id=2370453
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

55 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

4.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.80%
Raw Score 0.008020
Percentile 57.2%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00802
2026-11-13
0.00802
2026-11-12
0.00802
2026-11-10
0.00802
2026-11-09
0.00802
2026-11-08
0.00802
2026-11-07
0.00802
2026-11-06
0.00802
2026-11-05
0.00802

Intelligence Sources

mitre ref →
nvd ref →

External Links