Msrc Windows Server 2012 R2 vulnerabilities

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-2026-20849 [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-2026-0386 [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-2026-20875 [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-2026-20868 [HIGH] CWE-122 Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability Description: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network. FAQ: How could an attacker exploit this vulnerability? An attacker authenticated on the domain could exploit this vulnerability by tricking a

CVE-2026-20847 [MEDIUM] CWE-200 Microsoft Windows File Explorer Spoofing Vulnerability Microsoft Windows File Explorer Spoofing Vulnerability Description: Exposure of sensitive information to an unauthorized actor in Windows Shell allows an authorized attacker to perform spoofing over a network. Windows Shell: Windows Shell Microsoft: Microsoft Customer Action Required: Yes Impact: Spoofing Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely Re

CVE-2026-20828 [MEDIUM] CWE-125 Windows rndismp6.sys Information Disclosure Vulnerability Windows rndismp6.sys Information Disclosure Vulnerability Description: Out-of-bounds read in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to disclose information with a physical attack. FAQ: What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is Kernel memory

CVE-2026-20925 [MEDIUM] CWE-73 NTLM Hash Disclosure Spoofing Vulnerability NTLM Hash Disclosure Spoofing Vulnerability Description: External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network. FAQ: According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? Minimal interaction with a malicious file by a user such as selecting (single-click), inspecting (right-click), or performing an

CVE-2026-20839 [MEDIUM] CWE-284 Windows Client-Side Caching (CSC) Service Information Disclosure Vulnerability Windows Client-Side Caching (CSC) Service Information Disclosure Vulnerability Description: Improper access control in Windows Client-Side Caching (CSC) Service allows an authorized attacker to disclose information locally. FAQ: What type of information could be disclosed by this vulnerability? An attacker who successfully exploited this vulnerability could potentially read portions o

CVE-2026-20872 [MEDIUM] CWE-73 NTLM Hash Disclosure Spoofing Vulnerability NTLM Hash Disclosure Spoofing Vulnerability Description: External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network. FAQ: According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? Minimal interaction with a malicious file by a user such as selecting (single-click), inspecting (right-click), or performing an

CVE-2026-20805 [MEDIUM] CWE-200 Desktop Window Manager Information Disclosure Vulnerability Desktop Window Manager Information Disclosure Vulnerability Description: Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally. FAQ: What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is a se

CVE-2026-20927 [MEDIUM] CWE-362 Windows SMB Server Denial of Service Vulnerability Windows SMB Server Denial of Service Vulnerability Description: Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to deny service 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 vulnerability requires an

CVE-2026-20824 [MEDIUM] CWE-693 Windows Remote Assistance Security Feature Bypass Vulnerability Windows Remote Assistance Security Feature Bypass Vulnerability Description: Protection mechanism failure in Windows Remote Assistance allows an unauthorized attacker to bypass a security feature locally. FAQ: According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? Exploitation of the vulnerability requires that a user open a specially crafted f

CVE-2026-20821 [MEDIUM] CWE-200 Remote Procedure Call Information Disclosure Vulnerability Remote Procedure Call Information Disclosure Vulnerability Description: Exposure of sensitive information to an unauthorized actor in Windows Remote Procedure Call allows an unauthorized attacker to disclose information locally. FAQ: What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability i