CVE-2026-40400
Relative path traversal in Windows PowerShell allows an authorized attacker to execute code over a network.
- Score
- CVSS 3.1 8.0 High
- Status
- Analyzed - secure@microsoft.com
- Published
- 2026-07-14
- Last modified
- 2026-10-08
- Weaknesses
- CWE-23
Affected products
- Powershell (Microsoft)
- Windows 10 1607 (Microsoft)
- Windows 10 1809 (Microsoft)
- Windows 10 21H2 (Microsoft)
- Windows 10 21h2 (Microsoft)
- Windows 10 22H2 (Microsoft)
- Windows 10 22h2 (Microsoft)
- Windows 11 24H2 (Microsoft)
- Windows 11 24h2 (Microsoft)
- Windows 11 25H2 (Microsoft)
- Windows 11 25h2 (Microsoft)
- Windows 11 26H1 (Microsoft)
- Windows 11 26h1 (Microsoft)
- Windows Server 2012 (Microsoft)
- Windows Server 2012 R2 (Microsoft)
- Windows Server 2016 (Microsoft)
- Windows Server 2019 (Microsoft)
- Windows Server 2022 (Microsoft)
- Windows Server 2025 (Microsoft)
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40400
