Msrc Windows Server 2019 vulnerabilities

CVE-2026-20844 [HIGH] CWE-416 Windows Clipboard Server Elevation of Privilege Vulnerability Windows Clipboard Server Elevation of Privilege Vulnerability Description: Use after free in Windows Clipboard Server allows an unauthorized attacker to elevate privileges locally. FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges. FAQ: According to the CVSS metric, th

CVE-2026-20820 [HIGH] CWE-122 Windows Common Log File System Driver Elevation of Privilege Vulnerability Windows Common Log File System Driver Elevation of Privilege Vulnerability Description: Heap-based buffer overflow in Windows Common Log File System Driver allows an authorized attacker to elevate privileges locally. FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM p

CVE-2026-20858 [HIGH] CWE-416 Windows Management Services Elevation of Privilege Vulnerability Windows Management Services Elevation of Privilege Vulnerability Description: Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally. FAQ: 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. FAQ: Acc

CVE-2026-20934 [HIGH] CWE-362 Windows SMB Server Elevation of Privilege Vulnerability Windows SMB Server Elevation of Privilege Vulnerability Description: Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network. FAQ: According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerabilit

CVE-2026-20831 [HIGH] CWE-367 Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability Description: Time-of-check time-of-use (toctou) race condition in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully e

CVE-2023-31096 [HIGH] CWE-121 MITRE: CVE-2023-31096 Windows Agere Soft Modem Driver Elevation of Privilege Vulnerability MITRE: CVE-2023-31096 Windows Agere Soft Modem Driver Elevation of Privilege Vulnerability Description: 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 cumu

CVE-2026-20860 [HIGH] CWE-843 Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability Description: Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who su

CVE-2026-20874 [HIGH] CWE-362 Windows Management Services Elevation of Privilege Vulnerability Windows Management Services Elevation of Privilege Vulnerability Description: Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally. FAQ: According to the CVSS metric, successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? In

CVE-2026-20877 [HIGH] CWE-416 Windows Management Services Elevation of Privilege Vulnerability Windows Management Services Elevation of Privilege Vulnerability Description: Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally. FAQ: According to the CVSS metric, successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? In this case, a successful attack could be performed from a low privilege AppCo

CVE-2026-20849 [HIGH] CWE-807 Windows Kerberos Elevation of Privilege Vulnerability Windows Kerberos Elevation of Privilege Vulnerability Description: Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network. FAQ: According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? A high attack complexity means the attacker must be able to perform a precise machine‑in‑t

CVE-2026-20822 [HIGH] CWE-416 Windows Graphics Component Elevation of Privilege Vulnerability Windows Graphics Component Elevation of Privilege Vulnerability Description: Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally. FAQ: According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? In a GPU paravirtualization scenario, an attacker who successfully exploited t

CVE-2026-0386 [HIGH] CWE-284 Windows Deployment Services Remote Code Execution Vulnerability Windows Deployment Services Remote Code Execution Vulnerability Description: Improper access control in Windows Deployment Services allows an unauthorized attacker to execute code over an adjacent network. FAQ: Are there additional steps I need to take to be protected from this vulnerability? Admins should take the following steps to be protected from CVE-2026-0386: Audit existing WDS usage and identi

CVE-2026-20926 [HIGH] CWE-362 Windows SMB Server Elevation of Privilege Vulnerability Windows SMB Server Elevation of Privilege Vulnerability Description: Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network. FAQ: According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerabilit

CVE-2026-20867 [HIGH] CWE-362 Windows Management Services Elevation of Privilege Vulnerability Windows Management Services Elevation of Privilege Vulnerability Description: Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally. FAQ: According to the CVSS metric, successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? In

CVE-2026-20875 [HIGH] CWE-476 Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability Description: Null pointer dereference in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to deny service over a network. Windows Local Security Authority Subsystem Service (LSASS): Windows Local Security Authority Subsystem Service (LSASS) Mi

CVE-2026-20816 [HIGH] CWE-367 Windows Installer Elevation of Privilege Vulnerability Windows Installer Elevation of Privilege Vulnerability Description: Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally. FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges. Windows Installer: Window

CVE-2024-55414 [CRITICAL] CWE-122 Windows Motorola Soft Modem Driver Elevation of Privilege Vulnerability Windows Motorola Soft Modem Driver Elevation of Privilege Vulnerability Description: Microsoft is aware of vulnerabilities in the third party Motorola Soft Modem drivers that ships natively with supported Windows operating systems. This is an announcement of the upcoming removal of smserl64.sys and smserial.sys drivers. The drivers have been removed in the January cumulative update. Soft mo

CVE-2026-20918 [HIGH] CWE-362 Windows Management Services Elevation of Privilege Vulnerability Windows Management Services Elevation of Privilege Vulnerability Description: Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally. FAQ: According to the CVSS metric, successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? In

CVE-2026-20837 [HIGH] CWE-122 Windows Media Remote Code Execution Vulnerability Windows Media Remote Code Execution Vulnerability Description: Heap-based buffer overflow in Windows Media allows an unauthorized attacker to execute code locally. FAQ: 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

CVE-2026-20814 [HIGH] CWE-362 DirectX Graphics Kernel Elevation of Privilege Vulnerability DirectX Graphics Kernel Elevation of Privilege Vulnerability Description: Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally. FAQ: According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerabilit