CVE-2026-40400
Windows PowerShell Remote Code Execution Vulnerability
CVSS Score
8.0
EPSS Score
0.0%
EPSS Percentile
0th
Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network.
| Vendor | microsoft |
| Product | powershell 7.5 |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jul 14, 2026 |
| Last Updated | Oct 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / PowerShell 7.5
7.5.0 < 7.5.11
Microsoft / PowerShell 7.6
7.6.0 < 7.6.6
Microsoft / Windows 10 Version 1607
10.0.14393.0 < 10.0.14393.9339
Microsoft / Windows 10 Version 1809
10.0.17763.0 < 10.0.17763.9020
Microsoft / Windows 10 Version 21H2
10.0.19044.0 < 10.0.19044.7548
Microsoft / Windows 10 Version 22H2
10.0.19045.0 < 10.0.19045.7548
Microsoft / Windows 11 Version 24H2
10.0.26100.0 < 10.0.26100.8875
Microsoft / Windows 11 Version 25H2
10.0.26200.0 < 10.0.26200.8875
Microsoft / Windows 11 version 26H1
10.0.28000.0 < 10.0.28000.2525
Microsoft / Windows Server 2012
6.2.9200.0 < 6.2.9200.26226
Microsoft / Windows Server 2012 (Server Core installation)
6.2.9200.0 < 6.2.9200.26226
Microsoft / Windows Server 2012 R2
6.3.9600.0 < 6.3.9600.23291
Microsoft / Windows Server 2012 R2 (Server Core installation)
6.3.9600.0 < 6.3.9600.23291
Microsoft / Windows Server 2016
10.0.14393.0 < 10.0.14393.9339
Microsoft / Windows Server 2016 (Server Core installation)
10.0.14393.0 < 10.0.14393.9339
Microsoft / Windows Server 2019
10.0.17763.0 < 10.0.17763.9020
Microsoft / Windows Server 2019 (Server Core installation)
10.0.17763.0 < 10.0.17763.9020
Microsoft / Windows Server 2022
10.0.20348.0 < 10.0.20348.5386
Microsoft / Windows Server 2025
10.0.26100.0 < 10.0.26100.33158
Microsoft / Windows Server 2025 (Server Core installation)
10.0.26100.0 < 10.0.26100.33158