December 2025 Patch Tuesday Analysis

Today’s Patch Tuesday Alert addresses Microsoft’s December 2025 Security Updates. The FIRE team is actively working on coverage for these vulnerabilities and expect to ship that coverage as soon as it is completed.

In-The-Wild & Disclosed CVEs

CVE-2025-62221

A use after free vulnerability in the Windows Cloud Files Mini Filter could allow an authenticated user to elevate their privileges to SYSTEM. Microsoft has reported this vulnerability as Exploitation Detected.

CVE-2025-54100

A command injection vulnerability exists within Windows PowerShell that could allow unauthorized attackers to execute code locally via the Invoke-WebRequest command. After installing the update, users will see a warning when using the Invoke-WebRequest command warning of the risk of script execution. Microsoft has reported this vulnerability as Exploitation Less Likely.

CVE-2025-64671

A command injection vulnerability exists within GitHub copilot for JetBrains that could allow code execution via malicious cross prompt injection from untrusted files or MCP servers. The code execution occurs because additional commands are appended to the terminal auto-approve setting. Microsoft has reported this vulnerability as Exploitation Less Likely.

CVE Breakdown by Tag

While historical Microsoft Security Bulletin groupings are gone, Microsoft vulnerabilities are tagged with an identifier. This list provides a breakdown of the CVEs on a per tag basis. Vulnerabilities are also color coded to aid with identifying key issues.

• Traditional Software
• Mobile Software
• Cloud or Cloud Adjacent
• Vulnerabilities that are being exploited or that have been disclosed will be highlighted.

Other Information

At the time of publication, there were no new advisories included with the December Security Guidance.