CVE-2026-20841 Windows Notepad App Remote Code Execution Vulnerability

Added FAQ information. This is an informational change only.


CVE-2026-21518 GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability

Improper neutralization of special elements used in a command (‘command injection’) in GitHub Copilot and Visual Studio Code allows an unauthorized attacker to bypass a security feature over a network.


CVE-2026-21519 Desktop Window Manager Elevation of Privilege Vulnerability

Access of resource using incompatible type (‘type confusion’) in Desktop Window Manager allows an authorized attacker to elevate privileges locally.


CVE-2025-2884 Cert CC: CVE-2025-2884 Out-of-Bounds read vulnerability in TCG TPM2.0 reference implementation

Added Affected Software for Windows packages


CVE-2026-21247 Windows Hyper-V Remote Code Execution Vulnerability

Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.


CVE-2026-21251 Cluster Client Failover (CCF) Elevation of Privilege Vulnerability

Use after free in Windows Cluster Client Failover allows an authorized attacker to elevate privileges locally.


CVE-2026-21260 Microsoft Outlook Spoofing Vulnerability

Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.


CVE-2026-21248 Windows Hyper-V Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.


CVE-2026-21258 Microsoft Excel Information Disclosure Vulnerability

Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.


CVE-2026-21259 Microsoft Excel Elevation of Privilege Vulnerability

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to elevate privileges locally.


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