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7.8
Windows SMB Server: Authorized Users Can Gain Elevated Privileges
CVE-2026-24294
Summary
A flaw in the Windows SMB Server allows users who have already been authenticated to gain elevated access to a computer, potentially allowing them to perform actions they normally wouldn't be able to. This issue affects Windows systems. To protect your system, apply the latest Windows updates to ensure you have the latest security patches.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| microsoft | windows_10_1607 | <= 10.0.14393.8957 | – |
| microsoft | windows_10_1607 | <= 10.0.14393.8957 | – |
| microsoft | windows_10_1809 | <= 10.0.17763.8511 | – |
| microsoft | windows_10_1809 | <= 10.0.17763.8511 | – |
| microsoft | windows_10_21h2 | <= 10.0.19044.7058 | – |
| microsoft | windows_10_21h2 | <= 10.0.19044.7058 | – |
| microsoft | windows_10_21h2 | <= 10.0.19044.7058 | – |
| microsoft | windows_10_22h2 | <= 10.0.19045.7058 | – |
| microsoft | windows_10_22h2 | <= 10.0.19045.7058 | – |
| microsoft | windows_10_22h2 | <= 10.0.19045.7058 | – |
| microsoft | windows_11_23h2 | <= 10.0.22631.6783 | – |
| microsoft | windows_11_23h2 | <= 10.0.22631.6783 | – |
| microsoft | windows_11_24h2 | <= 10.0.26100.7979 | – |
| microsoft | windows_11_24h2 | <= 10.0.26100.7979 | – |
| microsoft | windows_11_25h2 | <= 10.0.26200.7979 | – |
| microsoft | windows_11_25h2 | <= 10.0.26200.7979 | – |
| microsoft | windows_11_26h1 | <= 10.0.28000.1719 | – |
| microsoft | windows_11_26h1 | <= 10.0.28000.1719 | – |
| microsoft | windows_server_2012 | All versions | – |
| microsoft | windows_server_2012 | r2 | – |
| microsoft | windows_server_2016 | <= 10.0.14393.8957 | – |
| microsoft | windows_server_2019 | <= 10.0.17763.8511 | – |
| microsoft | windows_server_2022 | <= 10.0.20348.4830 | – |
| microsoft | windows_server_2022_23h2 | <= 10.0.25398.2207 | – |
| microsoft | windows_server_2025 | <= 10.0.26100.32463 | – |
Original title
Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.
Original description
Improper authentication in Windows SMB Server allows an authorized attacker to elevate privileges locally.
nvd CVSS3.1
7.8
Vulnerability type
CWE-287
Improper Authentication
Published: 10 Mar 2026 · Updated: 14 Mar 2026 · First seen: 11 Mar 2026