CVE-2025-33073

Windows SMB Client Elevation of Privilege Vulnerability

At a glance

Severity: HIGH 8.8
Exploitation: Known exploited (CISA KEV) · added 2025-10-20
Exploited per ENISA since 2025-10-20
EPSS: EPSS 82.70 % · percentile 100 (2026-10-27)
State: PUBLISHED
Published: 2025-06-10
Updated: 2026-02-26
Assigner: microsoft
NVD status: Analyzed

Description

Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C	microsoft
CVSS 3.1	HIGH 8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)

Weaknesses (CWE)

CWE-284

European references

ENISA EUVD · EUVD-2025-17737
GCVE · GCVE-0-2025-33073

CERT-FR advisories

CERTFR-2025-AVI-0499 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* < 10.0.10240.21034
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* < 10.0.10240.21034
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* < 10.0.14393.8148
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* < 10.0.14393.8148
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* < 10.0.17763.7434
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* < 10.0.17763.7434
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* < 10.0.19044.5965
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* < 10.0.19045.5965
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* < 10.0.22621.5472
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* < 10.0.22631.5472
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* < 10.0.26100.4270
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* < 10.0.14393.8148
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* < 10.0.17763.7434
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.3745
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* < 10.0.25398.1665
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* < 10.0.26100.4270

Affected products

Product	Versions
Microsoft · Windows 10 Version 1507	affected 10.0.10240.0 < 10.0.10240.21034
Microsoft · Windows 10 Version 1607	affected 10.0.14393.0 < 10.0.14393.8148
Microsoft · Windows 10 Version 1809	affected 10.0.17763.0 < 10.0.17763.7434
Microsoft · Windows 10 Version 21H2	affected 10.0.19044.0 < 10.0.19044.5965
Microsoft · Windows 10 Version 22H2	affected 10.0.19045.0 < 10.0.19045.5965
Microsoft · Windows 11 version 22H2	affected 10.0.22621.0 < 10.0.22621.5472
Microsoft · Windows 11 version 22H3	affected 10.0.22631.0 < 10.0.22631.5472
Microsoft · Windows 11 Version 23H2	affected 10.0.22631.0 < 10.0.22631.5472
Microsoft · Windows 11 Version 24H2	affected 10.0.26100.0 < 10.0.26100.4349
Microsoft · Windows Server 2008 R2 Service Pack 1	affected 6.1.7601.0 < 6.1.7601.27769
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)	affected 6.1.7601.0 < 6.1.7601.27769
Microsoft · Windows Server 2008 Service Pack 2	affected 6.0.6003.0 < 6.0.6003.23351
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)	affected 6.0.6003.0 < 6.0.6003.23351
Microsoft · Windows Server 2012	affected 6.2.9200.0 < 6.2.9200.25522
Microsoft · Windows Server 2012 (Server Core installation)	affected 6.2.9200.0 < 6.2.9200.25522
Microsoft · Windows Server 2012 R2	affected 6.3.9600.0 < 6.3.9600.22620
Microsoft · Windows Server 2012 R2 (Server Core installation)	affected 6.3.9600.0 < 6.3.9600.22620
Microsoft · Windows Server 2016	affected 10.0.14393.0 < 10.0.14393.8148
Microsoft · Windows Server 2016 (Server Core installation)	affected 10.0.14393.0 < 10.0.14393.8148
Microsoft · Windows Server 2019	affected 10.0.17763.0 < 10.0.17763.7434

References

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD