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CVE-2026-40400

nvd nist
Published: Jul 14, 2026Modified: Sep 17, 2026

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8.0
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Exploitability: 2.1 / Impact: 5.9
Source: secure@microsoft.com (Secondary)

Description

Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network.

Affected (22)

Microsoft
12 products
Windows 10 1607
Windows 10 1809
Windows 10 21h2
Windows 10 22h2
Windows 11 24h2
Windows 11 25h2
Windows 11 26h1
Windows Server 2012
Windows Server 2016
Windows Server 2019
Windows Server 2022
Windows Server 2025
Configuration A
22 vulnerable
Vulnerable SoftwareAffected Versions
Microsoft
Windows 10 1607
version < 10.0.14393.9339
Windows 10 1607
version < 10.0.14393.9339
Microsoft
Windows 10 1809
version < 10.0.17763.9020
Windows 10 1809
version < 10.0.17763.9020
Microsoft
Windows 10 21h2
version < 10.0.19044.7548
Windows 10 21h2
version < 10.0.19044.7548
Windows 10 21h2
version < 10.0.19044.7548
Microsoft
Windows 10 22h2
version < 10.0.19045.7548
Windows 10 22h2
version < 10.0.19045.7548
Windows 10 22h2
version < 10.0.19045.7548
Microsoft
Windows 11 24h2
version < 10.0.26100.8875
Windows 11 24h2
version < 10.0.26100.8875
Microsoft
Windows 11 25h2
version < 10.0.26200.8875
Windows 11 25h2
version < 10.0.26200.8875
Microsoft
Windows 11 26h1
version < 10.0.28000.2269
Windows 11 26h1
version < 10.0.28000.2269
Microsoft
Windows Server 2012
All versions
Windows Server 2012
Version r2
Windows Server 2016
version < 10.0.14393.9339
Windows Server 2019
version < 10.0.17763.9020
Windows Server 2022
version < 10.0.20348.5386
Windows Server 2025
version < 10.0.26100.33158

Related CWEs

CWE-23
Relative Path Traversal
The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory.

References (1)

Source: secure@microsoft.com
PatchVendor Advisory

Timeline

No history available yet.