Microsoft vulnerabilities
Published CVEs affecting Microsoft products: 5234 record(s), with severity, exploitation and fixes.
Windows Server 2025 3001Windows Server 2025 (Server Core installation) 2997Windows 11 Version 24H2 2883Windows 11 Version 25H2 2835Windows Server 2022 2820Windows Server 2019 2708Windows Server 2019 (Server Core installation) 2666Windows 10 Version 1809 2600Windows 10 Version 21H2 2576Windows 11 version 26H1 2565Windows 10 Version 22H2 2559Windows 11 version 23H2 2391Windows Server 2016 2296Windows Server 2016 (Server Core installation) 2243Windows 11 24h2 2218Windows 10 Version 1607 2181Windows 11 25h2 2170Windows 10 1809 2066Windows 10 21h2 1982Windows 10 22h2 1968Windows 11 26h1 1882Windows Server 2012 1860Windows Server 2012 R2 1817Windows Server 2012 R2 (Server Core installation) 1808Windows 10 1607 1761Windows 11 23h2 1754Windows Server 2012 (Server Core installation) 1703Windows 11 Version 26H2 1007Microsoft 365 Apps for Enterprise 579365 Apps 575Microsoft Office LTSC 2024 559Microsoft Office LTSC 2021 556Windows Server 2022 23h2 544Windows Server 2022, 23H2 Edition (Server Core installation) 543Office 2021 465Office 2024 465Microsoft Office LTSC for Mac 2021 453Microsoft Office LTSC for Mac 2024 452Microsoft Office 2019 386Microsoft Office 365 for Mac 375
CVE-2026-83675
High · 7.0
CWE-416 Oct 13, 2026
Windows Kernel Elevation of Privilege Vulnerability
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-83674
High · 8.1
CWE-1390 Oct 13, 2026
Active Directory Federation Services (AD FS) Spoofing Vulnerability
Weak authentication in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-83672
Medium · 4.7
CWE-497 Oct 13, 2026
Windows Installer Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Windows Installer allows an authorized attacker to disclose information locally.
CVE-2026-83671
Medium · 6.5
CWE-125 Oct 13, 2026
Windows Hyper-V Information Disclosure Vulnerability
Out-of-bounds read in Windows Hyper-V allows an authorized attacker to disclose information locally.
CVE-2026-83670
High · 7.5
CWE-125 Oct 13, 2026
Function Discovery Service (fdwsd.dll) Information Disclosure Vulnerability
Out-of-bounds read in Function Discovery Service (fdwsd.dll) allows an unauthorized attacker to disclose information over a network.
CVE-2026-83669
High · 7.8
CWE-908 Oct 13, 2026
Windows Error Reporting Elevation of Privilege Vulnerability
Use of uninitialized resource in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
CVE-2026-83668
Medium · 5.5
CWE-125 Oct 13, 2026
Windows WLAN Service Information Disclosure Vulnerability
Out-of-bounds read in Windows WLAN Service allows an authorized attacker to disclose information locally.
CVE-2026-83667
Medium · 6.5
CWE-125 Oct 13, 2026
Windows Active Directory Domain Services Denial of Service Vulnerability
Out-of-bounds read in Active Directory Domain Services allows an authorized attacker to deny service over a network.
CVE-2026-83666
High · 7.0
CWE-362 Oct 13, 2026
Active Directory Certificate Services (AD CS) Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Active Directory Certificate Services (AD CS) allows an authorized attacker to elevate privileges locally.
CVE-2026-83665
High · 7.5
CWE-476 Oct 13, 2026
Windows DHCP Server Denial of Service Vulnerability
Null pointer dereference in Windows DHCP Server allows an unauthorized attacker to deny service over a network.
CVE-2026-83664
Medium · 5.5
CWE-843 Oct 13, 2026
Windows Portable Device File System Driver Information Disclosure Vulnerability
Access of resource using incompatible type ('type confusion') in Windows Portable Device File System Driver allows an authorized attacker to disclose information locally.
CVE-2026-83659
High · 7.8
CWE-59 Oct 13, 2026
Windows User Profile Service Elevation of Privilege Vulnerability
Improper link resolution before file access ('link following') in Windows User Profile Service allows an authorized attacker to elevate privileges locally.
CVE-2026-83658
Medium · 5.5
CWE-862 Oct 13, 2026
Windows Error Reporting Information Disclosure Vulnerability
Improper access control in Windows Error Reporting allows an authorized attacker to disclose information locally.
CVE-2026-83657
Medium · 5.5
CWE-1390 Oct 13, 2026
Windows Modern Device Management (MDM) Tampering Vulnerability
Weak authentication in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
CVE-2026-83656
Medium · 4.7
CWE-306 Oct 13, 2026
Windows Modern Device Management (MDM) Tampering Vulnerability
Missing authentication for critical function in Windows Modern Device Management (MDM) allows an authorized attacker to perform tampering locally.
CVE-2026-83655
High · 7.5
CWE-125 Oct 13, 2026
Network Policy Server (NPS) Denial of Service Vulnerability
Out-of-bounds read in Network Policy Server (NPS) allows an unauthorized attacker to deny service over a network.
CVE-2026-83654
High · 7.8
CWE-306 Oct 13, 2026
Windows Modern Device Management (MDM) Elevation of Privilege Vulnerability
Missing authentication for critical function in Windows Modern Device Management (MDM) allows an authorized attacker to elevate privileges locally.
CVE-2026-83652
High · 7.8
CWE-122 Oct 13, 2026
Windows NTFS Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
CVE-2026-83651
Medium · 6.5
CWE-125 Oct 13, 2026
Windows GDI Information Disclosure Vulnerability
Out-of-bounds read in Windows GDI allows an unauthorized attacker to disclose information over a network.
CVE-2026-83650
High · 7.8
CWE-122 Oct 13, 2026
Windows Media Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Media allows an authorized attacker to elevate privileges locally.
CVE-2026-83649
Medium · 6.5
CWE-125 Oct 13, 2026
Windows Local Security Authority Subsystem Service (LSASS) Denial of Service Vulnerability
Out-of-bounds read in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
CVE-2026-83648
Medium · 6.5
CWE-476 Oct 13, 2026
Windows Active Directory Domain Services Denial of Service Vulnerability
Null pointer dereference in Active Directory Domain Services allows an authorized attacker to deny service over a network.
CVE-2026-83647
High · 7.5
CWE-125 Oct 13, 2026
Windows Active Directory Domain Services Denial of Service Vulnerability
Out-of-bounds read in Active Directory Domain Services allows an unauthorized attacker to deny service over a network.
CVE-2026-83646
Medium · 4.8
CWE-601 Oct 13, 2026
Active Directory Federation Services (AD FS) Spoofing Vulnerability
Url redirection to untrusted site ('open redirect') in Active Directory Federation Services (AD FS) allows an authorized attacker to perform spoofing over a network.
CVE-2026-83645
High · 7.5
CWE-770 Oct 13, 2026
Active Directory Federation Services (AD FS) Denial of Service Vulnerability
Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.