Description
Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 – < 10.0.10240.21034 | 10.0.10240.21034 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.8148 | 10.0.14393.8148 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.7434 | 10.0.17763.7434 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.5965 | 10.0.19044.5965 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.5965 | 10.0.19045.5965 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.5472 | 10.0.22621.5472 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – < 10.0.22631.5472 | 10.0.22631.5472 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.5472 | 10.0.22631.5472 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.4349 | 10.0.26100.4349 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.7601.0 – < 6.1.7601.27769 | 6.1.7601.27769 |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.1.7601.0 – < 6.1.7601.27769 | 6.1.7601.27769 |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.6003.0 – < 6.0.6003.23351 | 6.0.6003.23351 |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.6003.0 – < 6.0.6003.23351 | 6.0.6003.23351 |
| Microsoft | Windows Server 2012 | 6.2.9200.0 – < 6.2.9200.25522 | 6.2.9200.25522 |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 – < 6.2.9200.25522 | 6.2.9200.25522 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 – < 6.3.9600.22620 | 6.3.9600.22620 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 – < 6.3.9600.22620 | 6.3.9600.22620 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.8148 | 10.0.14393.8148 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.8148 | 10.0.14393.8148 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.7434 | 10.0.17763.7434 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.7434 | 10.0.17763.7434 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.3807 | 10.0.20348.3807 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.1665 | 10.0.25398.1665 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.4349 | 10.0.26100.4349 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.4349 | 10.0.26100.4349 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | python-impacket | 0.13.1-1.1 | openSUSE-SU-2026:10837-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Exploit-DB 1
- Windows 11 SMB Client - Privilege Escalation & Remote Code Execution (RCE) EDB-52330 · remote · Jun 15, 2025
GitHub 10 repositories
-
mverschu/CVE-2025-33073 ★ 719 · Jun 13, 2025
PoC Exploit for the NTLM reflection SMB flaw.
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uziii2208/CVE-2025-33073 ★ 68 · Nov 14, 2025
Universal exploitation tool for CVE-2025-33073 targeting Windows Domain Controllers with DNSAdmins privileges and WinRM enabled.
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SFRDevelopment/windows-smb-vulnerability-framework-cve-2025-33073 ★ 6 · Oct 18, 2025
Proof-of-Concept
-
EgCupCake/cupntlm-Automated-Exploit-For-CVE-2025-33073- ★ 3 · Mar 9, 2026
cupntlm
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obscura-cert/CVE-2025-33073 ★ 1 · Jun 28, 2025
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IyarGross/SMB-CVE-2025-33073 ★ 0 · Mar 11, 2026
Advanced SMB Honeypot: CVE-2025-33073 Research & Implementation
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irjfifndn-prog/Blackash-CVE-2025-33073 ★ 0 · Nov 17, 2025
CVE-2025-33073
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cve-2025-33073/cve-2025-33073 ★ 0 · Sep 6, 2025
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matejsmycka/CVE-2025-33073-checker ★ 0 · Jul 31, 2025
This rough PoC checker script tests targets for CVE-2025-33073 vulnerability by attempting to perform NTLM reflection attacks using NTLM auth coercion via samba RPC, to do this you need to have accou…
-
starscow/CVE-2025-33073 ★ 0 · Jun 17, 2025
PoC Exploit for the NTLM reflection SMB flaw.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 4
- openSUSE-SU-2026:10837-1 python311-impacket-0.13.1-1.1 on GA media SUSE / openSUSE Security Updates · May 22, 2026
- WID-SEC-2025-1277 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 20, 2025
- MSRC-CVE-2025-33073 Windows SMB Client Elevation of Privilege Vulnerability Microsoft Security Response Center · Jun 11, 2025
- NCSC-2025-0188 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Jun 10, 2025
References
- Windows SMB Client Elevation of Privilege Vulnerability vendor-advisory patch