CVE-2025-54100

high

Description

Improper neutralization of special elements used in a command ('command injection') in Windows PowerShell allows an unauthorized attacker to execute code locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-54100

https://thehackernews.com/2025/12/microsoft-issues-security-fixes-for-56.html

https://securityaffairs.com/185515/breaking-news/microsoft-patch-tuesday-security-updates-for-december-2025-fixed-an-actively-exploited-zero-day.html

https://www.theregister.com/2025/12/09/december_2025_patch_tuesday/

https://www.bleepingcomputer.com/news/security/microsoft-windows-powershell-now-warns-when-running-invoke-webrequest-scripts/

https://www.tenable.com/blog/microsofts-december-2025-patch-tuesday-addresses-56-cves-cve-2025-62221

https://www.vicarius.io/vsociety/posts/cve-2025-54100-mitigate-powershell-vulnerability

https://www.vicarius.io/vsociety/posts/cve-2025-54100-detect-powershell-vulnerability

Details

Source: Mitre, NVD

Published: 2025-12-09

Updated: 2025-12-24

Risk Information

CVSS v2

Base Score: 7.2

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H