Microsoft Windows Server 2019 vulnerabilities

CVE-2026-25171 [HIGH] CWE-416 CVE-2026-25171: Use after free in Windows Authentication Methods allows an authorized attacker to elevate privileges Use after free in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.

CVE-2026-32087 [HIGH] CWE-122 CVE-2026-32087: Heap-based buffer overflow in Function Discovery Service (fdwsd.dll) allows an authorized attacker t Heap-based buffer overflow in Function Discovery Service (fdwsd.dll) allows an authorized attacker to elevate privileges locally.

CVE-2024-30084 [HIGH] CWE-367 CVE-2024-30084: Windows Kernel-Mode Driver Elevation of Privilege Vulnerability Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

CVE-2025-62473 [MEDIUM] CWE-126 CVE-2025-62473: Buffer over-read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker Buffer over-read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.

CVE-2026-42907 [MEDIUM] CWE-200 CVE-2026-42907: Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized att Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to disclose information over a network.

CVE-2026-34348 [MEDIUM] CWE-693 CVE-2026-34348: Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to discl Protection mechanism failure in Windows Event Logging Service allows an authorized attacker to disclose information over a network.

CVE-2021-1734 [HIGH] CVE-2021-1734: Windows Remote Procedure Call Information Disclosure Vulnerability Windows Remote Procedure Call Information Disclosure Vulnerability

CVE-2020-1534 [HIGH] CVE-2020-1534: An elevation of privilege vulnerability exists when the Windows Backup Service improperly handles fi An elevation of privilege vulnerability exists when the Windows Backup Service improperly handles file operations. To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges. The security update addresses the vulnerability by correcting how

CVE-2020-1478 [HIGH] CWE-787 CVE-2020-1478: A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in memory. An attacker who successfully exploited the vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights. There are multiple ways an attacker could exploit the vulnerability, such as by convincin

CVE-2020-1477 [HIGH] CWE-787 CVE-2020-1477: A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in A memory corruption vulnerability exists when Windows Media Foundation improperly handles objects in memory. An attacker who successfully exploited the vulnerability could install programs; view, change, or delete data; or create new accounts with full user rights. There are multiple ways an attacker could exploit the vulnerability, such as by convincin

CVE-2020-1528 [HIGH] CVE-2020-1528: An elevation of privilege vulnerability exists when the Windows Radio Manager API improperly handles An elevation of privilege vulnerability exists when the Windows Radio Manager API improperly handles memory. To exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges. The security update addresses the vulnerability by correcting how the Wi

CVE-2025-29809 [HIGH] CWE-922 CVE-2025-29809: Insecure storage of sensitive information in Windows Kerberos allows an authorized attacker to bypas Insecure storage of sensitive information in Windows Kerberos allows an authorized attacker to bypass a security feature locally.

CVE-2021-40476 [HIGH] CWE-522 CVE-2021-40476: Windows AppContainer Elevation Of Privilege Vulnerability Windows AppContainer Elevation Of Privilege Vulnerability

CVE-2021-43236 [HIGH] CVE-2021-43236: Microsoft Message Queuing Information Disclosure Vulnerability Microsoft Message Queuing Information Disclosure Vulnerability

CVE-2021-43222 [HIGH] CVE-2021-43222: Microsoft Message Queuing Information Disclosure Vulnerability Microsoft Message Queuing Information Disclosure Vulnerability

CVE-2024-21438 [HIGH] CWE-369 CVE-2024-21438: Microsoft AllJoyn API Denial of Service Vulnerability Microsoft AllJoyn API Denial of Service Vulnerability

CVE-2023-36709 [HIGH] CWE-476 CVE-2023-36709: Microsoft AllJoyn API Denial of Service Vulnerability Microsoft AllJoyn API Denial of Service Vulnerability

CVE-2024-38031 [HIGH] CWE-400 CVE-2024-38031: Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability

CVE-2024-38068 [HIGH] CWE-400 CVE-2024-38068: Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability

CVE-2024-38067 [HIGH] CWE-400 CVE-2024-38067: Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability Windows Online Certificate Status Protocol (OCSP) Server Denial of Service Vulnerability