CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HCVE-2025-33073
High (8.8) in Microsoft Windows. In CISA KEV since 2025-10-20. EPSS 83% chance of exploitation in the next 30 days.
Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
Severity
- EPSS
- 83% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
- CISA KEV
- listed 2025-10-20, due 2025-11-10
- CWE
- CWE-284
- Published
- Modified
- Record from
- the NVD, synced
Affected
- microsoft:windows_10_1507
- microsoft:windows_10_1607
- microsoft:windows_10_1809
- microsoft:windows_10_21h2
- microsoft:windows_10_22h2
- microsoft:windows_11_22h2
- microsoft:windows_11_23h2
- microsoft:windows_11_24h2
- microsoft:windows_server_2008
- microsoft:windows_server_2012
- microsoft:windows_server_2016
- microsoft:windows_server_2019
- microsoft:windows_server_2022
- microsoft:windows_server_2022_23h2
- microsoft:windows_server_2025
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33073
- https://www.vicarius.io/vsociety/posts/cve-2025-33073-detection-script-improper-access-control-in-windows-smb-affects-microsoft-products
- https://www.vicarius.io/vsociety/posts/cve-2025-33073-mitigation-script-improper-access-control-in-windows-smb-affects-microsoft-products
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-33073