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Microsoft Security Response Center

CVE-2026-20876: Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain Virtual Trust Level 2 (VTL2) privileges.

Microsoft Security Response Center
#vulnerability#windows#Windows Virtualization-Based Security (VBS) Enclave#Security Vulnerability
CVE-2026-20869: Windows Local Session Manager (LSM) Elevation of Privilege Vulnerability

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Local Session Manager (LSM) allows an authorized attacker to elevate privileges locally.

CVE-2026-20838: Windows Kernel Information Disclosure Vulnerability

Generation of error message containing sensitive information in Windows Kernel allows an authorized attacker to disclose information 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-2023-31096: MITRE: CVE-2023-31096 Windows Agere Soft Modem Driver Elevation of Privilege Vulnerability

**What privileges could be gained by an attacker who successfully exploited this vulnerability?** An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

CVE-2026-20840: Windows NTFS Remote Code Execution Vulnerability

**According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution?** The word **Remote** in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability.

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

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** For an attacker to exploit this vulnerability, they would need to have knowledge of a specific operation that triggers a memory allocation failure, specifically a use after free.