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#Security Vulnerability

CVE-2025-21420: Windows Disk Cleanup Tool 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.

Microsoft Security Response Center
#vulnerability#windows#Windows Disk Cleanup Tool#Security Vulnerability
CVE-2025-21383: Microsoft Excel Information Disclosure Vulnerability

**What type of information could be disclosed by this vulnerability?** An attacker who successfully exploited this vulnerability could potentially read small portions of heap memory.

CVE-2025-21379: DHCP Client Service Remote Code Execution Vulnerability

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** The attacker must inject themselves into the logical network path between the target and the resource requested by the victim to read or modify network communications. This is called a machine-in-the-middle (MITM) attack.

CVE-2025-21376: Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to win a race condition.

CVE-2025-21368: Microsoft Digest Authentication Remote Code Execution Vulnerability

**How could an attacker exploit this vulnerability?** To successfully exploit this remote code execution vulnerability, an attacker could send a malicious logon request to the target domain controller.

CVE-2025-21352: Internet Connection Sharing (ICS) Denial of Service Vulnerability

**According to the CVSS metric, successful exploitation of this vulnerability has a high impact on availability (A:H). What does that mean for this vulnerability?** An attacker can send specially crafted packets which could affect availability of the service and result in Denial of Service (DoS).

CVE-2025-21375: Kernel Streaming WOW Thunk Service 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-2025-21369: Microsoft Digest Authentication Remote Code Execution Vulnerability

**How could an attacker exploit this vulnerability?** To successfully exploit this remote code execution vulnerability, an attacker could send a malicious logon request to the target domain controller.

CVE-2025-21188: Azure Network Watcher VM Extension Elevation of Privilege Vulnerability

**How do I get the update for Microsoft HPC Pack?** If you do not have automatic updates enabled you need to manually update your extension. See Update Network Watcher extension to the latest version for update instructions. Customers who have automatic updates enabled do not need to take any further action.

CVE-2025-21183: Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability

**According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?** Successful exploitation of this vulnerability requires an attacker to win a race condition.