4.9

CVE-2025-0620: samba

CVSS: 4.9v3.1MediumModified
AliasesALPINE-CVE-2025-0620SUSE-SU-2025:02230-1UBUNTU-CVE-2025-0620
Published 06-06-2025Last modified 31-08-2026
Open JSON

Vulnerability summary

CVE-2025-0620 is a medium (CVSS 4.9) vulnerability in samba. EPSS estimates a 0.75% chance of exploitation in the next 30 days, higher than 54% of scored vulnerabilities.

Overall risk
20/100
0100
Low · default modelHow is this calculated?
CVSS score
4.9/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.75%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 06-06-2025
    PublishedVulnerability first disclosed.
  2. 31-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.75%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

0.00 pp

From 0.75% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.75%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse2 products
  • samba&distro=SUSE Linux Enterprise High Availability Extension 15 SP7< 4.21.6+git.402.80f493f530f-150700.3.3.1
  • samba&distro=SUSE Linux Enterprise Module for Basesystem 15 SP7< 4.21.6+git.402.80f493f530f-150700.3.3.1
Alpine1 product
  • samba≥ 4.21.0, < 4.21.6-r0
Debian1 product
  • samba< 2:4.22.2+dfsg-1
Opensuse1 product
  • samba&distro=openSUSE Tumbleweed< 4.22.2+git.396.c752843dcf4-1.1
Samba1 product
  • samba≥ 4.21.0, < 4.21.6 | ≥ 4.22.0, < 4.22.2
Ubuntu1 product
  • samba< 2:4.21.4+dfsg-1ubuntu3.1

6 vendors · 7 products

References

13 links
Show all 13 references