Autor: Peter Leibling

CVE-2023-31096 MITRE: CVE-2023-31096 Windows Agere Soft Modem Driver Elevation of Privilege Vulnerability

Microsoft is aware of vulnerabilities in the third party Agere Soft Modem drivers that ship natively with supported Windows operating systems. This is an announcement of the removal of agrsm64.sys and agrsm.sys drivers. The drivers have been removed in the January 2026 cumulative update. **Soft modem hardware dependent on these specific drivers will no longer…
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CVE-2026-21221 Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization (‚race condition‘) in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.

CVE-2026-20847 Microsoft Windows File Explorer Spoofing Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to perform spoofing over a network.

CVE-2026-20955 Microsoft Excel Remote Code Execution Vulnerability

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2026-20836 DirectX Graphics Kernel Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization (‚race condition‘) in Graphics Kernel allows an authorized attacker to elevate privileges locally.

CVE-2026-20839 Windows Client-Side Caching (CSC) Service Information Disclosure Vulnerability

Improper access control in Windows Client-Side Caching (CSC) Service allows an authorized attacker to disclose information locally.

CVE-2026-20926 Windows SMB Server Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization (‚race condition‘) in Windows SMB Server allows an authorized attacker to elevate privileges over a network.

CVE-2026-20932 Windows File Explorer Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.

CVE-2026-20956 Microsoft Excel Remote Code Execution Vulnerability

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVE-2026-20842 Microsoft DWM Core Library Elevation of Privilege Vulnerability

Use after free in Windows DWM allows an authorized attacker to elevate privileges locally.