CVE-2025-33073: Microsoft Windows SMB Client Improper Access Control Vulnerability
Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
Other sources
Microsoft Windows SMB Client contains an improper access control vulnerability that could allow for privilege escalation. An attacker could execute a specially crafted malicious script to coerce the victim machine to connect back to the attack system using SMB and authenticate.
— CISA
Windows SMB Client Elevation of Privilege Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22621.5472Patch KB5060999 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.5965Patch KB5060533 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.3807Fixed in 10.0.20348.3745Patch KB5060525 - Upgrade
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Fixed in 6.3.9600.22620Patch KB5061018 - Upgrade
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Fixed in 6.2.9200.25522Patch KB5061059 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.1.7601.27769Patch KB5061036 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.14393.8148Patch KB5061010 - Upgrade
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Fixed in 6.0.6003.23351Patch KB5061072 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.10240.21034Patch KB5060998 - Upgrade
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Fixed in 10.0.26100.4349Fixed in 10.0.26100.4270Patch KB5060841 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.5472Patch KB5060999 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.25398.1665Patch KB5060118 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19045.5965Patch KB5060533 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.17763.7434Patch KB5060531
Event History
Frequently Asked Questions
What is the severity of CVE-2025-33073?
CVE-2025-33073 has a high severity rating due to its potential for privilege escalation over the network.
How do I fix CVE-2025-33073?
To fix CVE-2025-33073, apply the pertinent security patches provided by Microsoft for the affected Windows versions.
What systems are affected by CVE-2025-33073?
CVE-2025-33073 affects multiple versions of Windows including Windows 10, Windows 11, and various Windows Server editions.
What is the impact of CVE-2025-33073?
The impact of CVE-2025-33073 allows an attacker with authorized access to elevate their privileges on affected systems.
Is there a workaround for CVE-2025-33073?
There are no recommended workarounds for CVE-2025-33073; patching is the advised method of mitigation.