Microsoft Windows 10 1809 vulnerabilities
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Published CVEs affecting Microsoft Windows 10 1809: 2624 record(s), with affected versions and fixes.cpe:2.3:o:microsoft:windows_10_1809
CVE-2026-21525
Medium · 6.2
KEV High · 52 CWE-476 Feb 10, 2026
Microsoft Windows NULL Pointer Dereference Vulnerability
Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.
CVE-2026-21508
High · 7.0
CWE-287 Feb 10, 2026
Windows Storage Elevation of Privilege Vulnerability
Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally.
CVE-2026-21510
High · 8.8
KEV High · 62 Public exploit CWE-693 Feb 10, 2026
Microsoft Windows Shell Protection Mechanism Failure Vulnerability
Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-21513
High · 8.8
KEV High · 56 CWE-693 Feb 10, 2026
Microsoft MSHTML Framework Protection Mechanism Failure Vulnerability
Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network.
CVE-2026-21255
High · 8.8
CWE-284 Feb 10, 2026
Windows Hyper-V Security Feature Bypass Vulnerability
Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally.
CVE-2026-21253
High · 7.0
CWE-416 Feb 10, 2026
Mailslot File System Elevation of Privilege Vulnerability
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
CVE-2026-21249
Low · 3.3
CWE-73 Feb 10, 2026
Windows NTLM Spoofing Vulnerability
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally.
CVE-2026-21248
High · 7.3
Public exploit CWE-787 Feb 10, 2026
Windows Hyper-V Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-21247
High · 7.3
CWE-20 Feb 10, 2026
Windows Hyper-V Remote Code Execution Vulnerability
Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-21246
High · 7.8
CWE-787 Feb 10, 2026
Windows Graphics Component Elevation of Privilege Vulnerability
Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
CVE-2026-21244
High · 7.3
Public exploit CWE-787 Feb 10, 2026
Windows Hyper-V Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-21240
High · 7.0
CWE-367 Feb 10, 2026
Windows HTTP.sys Elevation of Privilege Vulnerability
Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-21239
High · 7.8
CWE-787 Feb 10, 2026
Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-21238
High · 7.8
CWE-284 Feb 10, 2026
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-21236
High · 7.8
CWE-787 Feb 10, 2026
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-21235
High · 7.3
CWE-416 Feb 10, 2026
Windows Graphics Component Elevation of Privilege Vulnerability
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
CVE-2026-21234
High · 7.0
CWE-362 Feb 10, 2026
Windows Connected Devices Platform Service Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.
CVE-2026-21231
High · 7.8
CWE-362 Feb 10, 2026
Windows Kernel Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-21222
Medium · 5.5
CWE-532 Feb 10, 2026
Windows Kernel Information Disclosure Vulnerability
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-20846
High · 7.5
CWE-126 Feb 10, 2026
GDI+ Denial of Service Vulnerability
Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network.
CVE-2026-21265
Medium · 6.4
CWE-1329 Jan 13, 2026
Secure Boot Certificate Expiration Security Feature Bypass Vulnerability
Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes related to Windows boot manager or Secure Boot.
The operating system’s certificate update protection mechanism relies on firmware components that might contain defects, which can cause certificate trust updates to fail or behave unpredictably. This leads to potential disruption of the Secure Boot trust chain and requires careful validation and deployment to restore intended security guarantees.
Certificate Authority (CA)
Location
Purpose
Expiration Date
Microsoft Corporation KEK CA 2011
KEK
Signs updates to the DB and DBX
06/24/2026
Microsoft Corporation UEFI CA 2011
DB
Signs 3rd party boot loaders, Option ROMs, etc.
06/27/2026
Microsoft Windows Production PCA 2011
DB
Signs the Windows Boot Manager
10/19/2026
For more information see this CVE and Windows Secure Boot certificate expiration and CA updates.
CVE-2026-20962
Medium · 4.4
CWE-908 Jan 13, 2026
Dynamic Root of Trust for Measurement (DRTM) Information Disclosure Vulnerability
Use of uninitialized resource in Dynamic Root of Trust for Measurement (DRTM) allows an authorized attacker to disclose information locally.
CVE-2026-20940
High · 7.8
CWE-822 Jan 13, 2026
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
CVE-2026-20939
Medium · 5.5
CWE-200 Jan 13, 2026
Windows File Explorer Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
CVE-2026-20937
Medium · 5.5
CWE-200 Jan 13, 2026
Windows File Explorer Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.