CVE-2025-33073 kev in the critical feed json
Windows SMB Client Elevation of Privilege Vulnerability
published 2025-06-10 16 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-17737
- cvss
- 8.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2025-10-20
- epss
- 82.8%
- EPSS 82.8% chance of exploitation in 30 days, percentile 99.6%
- public exploits
- 1
- Exploit-DB
Summary
Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
Patch / fix
cisa required action Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Microsoft Windows 10 Version 1507 10.0.10240.21034
- Microsoft Windows 10 Version 1607 10.0.14393.8148
- Microsoft Windows 10 Version 1809 10.0.17763.7434
- Microsoft Windows 10 Version 21H2 10.0.19044.5965
- Microsoft Windows 10 Version 22H2 10.0.19045.5965
- Microsoft Windows 11 version 22H2 10.0.22621.5472
- Microsoft Windows 11 version 22H3 10.0.22631.5472
- Microsoft Windows 11 Version 23H2 10.0.22631.5472
- Microsoft Windows 11 Version 24H2 10.0.26100.4349
- Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.27769
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.27769
- Microsoft Windows Server 2008 Service Pack 2 6.0.6003.23351
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.23351
- Microsoft Windows Server 2012 6.2.9200.25522
- Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.25522
- Microsoft Windows Server 2012 R2 6.3.9600.22620
- Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.22620
- Microsoft Windows Server 2016 10.0.14393.8148
- Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.8148
- Microsoft Windows Server 2019 10.0.17763.7434
- Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.7434
- Microsoft Windows Server 2022 10.0.20348.3807
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1665
- Microsoft Windows Server 2025 10.0.26100.4349
- Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.4349
- python-impacket openSUSE Tumbleweed 0.13.1-1.1
opensuse advisories openSUSE-SU-2026:10837-1
Timeline
- Published
- First public exploit (EDB-52330)
- Added to CISA KEV
- CISA SSVC: exploitation active
- CISA patch deadline
Known exploited
- Added
- 12 mo ago
- Patch by
- 2025-11-10 (11 mo ago)
- Ransomware
- Not known
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- Vendor, product
- Microsoft, Windows
- CISA name
- Microsoft Windows SMB Client Improper Access Control Vulnerability
Ransomware
Groups reported to have exploited it in intrusions.
- TheGentlemen ransomware gang
reported by research.checkpoint.com
Ransomware Vulnerability Matrix by BushidoUK (github.com/BushidoUK/Ransomware-Vulnerability-Matrix), reformatted per CVE. CC BY 4.0
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- no
- Technical impact
- total
- Assessed
- 12 mo ago
Exploit prediction
82.83% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-52330 Windows 11 SMB Client - Privilege Escalation & Remote Code Execution (RCE) remote, 2025-06-15
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 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 |
| CNA | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Windows 10 Version 1507
- Microsoft Windows 10 Version 1607
- Microsoft Windows 10 Version 1809
- Microsoft Windows 10 Version 21H2
- Microsoft Windows 10 Version 22H2
- Microsoft Windows 11 version 22H2
- Microsoft Windows 11 version 22H3
- Microsoft Windows 11 Version 23H2
- Microsoft Windows 11 Version 24H2
- Microsoft Windows Server 2008 R2 Service Pack 1
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- Microsoft Windows Server 2008 Service Pack 2
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
- Microsoft Windows Server 2012
- Microsoft Windows Server 2012 (Server Core installation)
- Microsoft Windows Server 2012 R2
- Microsoft Windows Server 2012 R2 (Server Core installation)
- Microsoft Windows Server 2016
- Microsoft Windows Server 2016 (Server Core installation)
- Microsoft Windows Server 2019
- Microsoft Windows Server 2019 (Server Core installation)
- Microsoft Windows Server 2022
- Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
- Microsoft Windows Server 2025
- Microsoft Windows Server 2025 (Server Core installation)
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2025-33073
vendor-advisory, patch
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-33073
government-resource, us-government-resource
-
vicarius.io
/vsociety/posts/cve-2025-33073-detection-script-improper-access-control-in-windows-smb-affects-microsoft-produ
third-party-advisory
-
vicarius.io
/vsociety/posts/cve-2025-33073-mitigation-script-improper-access-control-in-windows-smb-affects-microsoft-prod
mitigation, third-party-advisory
Sources
- CVE List CVE-2025-33073
- NVD CVE-2025-33073
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.