Vulnerabilidades do Microsoft Windows Server 2016
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CVEs publicadas que afetam Microsoft Windows Server 2016: 2297 registro(s), com versões afetadas e correções.cpe:2.3:o:microsoft:windows_server_2016
CVE-2026-21251
Alta · 7.8
CWE-416 10/02/2026
Cluster Client Failover (CCF) Elevation of Privilege Vulnerability
Use after free in Windows Cluster Client Failover allows an authorized attacker to elevate privileges locally.
CVE-2026-21249
Baixa · 3.3
CWE-73 10/02/2026
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
Alta · 7.3
Exploit público CWE-787 10/02/2026
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
Alta · 7.3
CWE-20 10/02/2026
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
Alta · 7.8
CWE-787 10/02/2026
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
Alta · 7.3
Exploit público CWE-787 10/02/2026
Windows Hyper-V Remote Code Execution Vulnerability
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-21239
Alta · 7.8
CWE-787 10/02/2026
Windows Kernel Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-21238
Alta · 7.8
CWE-284 10/02/2026
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
Alta · 7.8
CWE-787 10/02/2026
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
Alta · 7.3
CWE-416 10/02/2026
Windows Graphics Component Elevation of Privilege Vulnerability
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
CVE-2026-21231
Alta · 7.8
CWE-362 10/02/2026
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
Média · 5.5
CWE-532 10/02/2026
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
Alta · 7.5
CWE-126 10/02/2026
GDI+ Denial of Service Vulnerability
Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network.
CVE-2026-21265
Média · 6.4
CWE-1329 13/01/2026
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-2026-20940
Alta · 7.8
CWE-822 13/01/2026
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
Média · 5.5
CWE-200 13/01/2026
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
Média · 5.5
CWE-200 13/01/2026
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-2026-20936
Média · 4.3
CWE-125 13/01/2026
Windows NDIS Information Disclosure Vulnerability
Out-of-bounds read in Windows NDIS allows an authorized attacker to disclose information with a physical attack.
CVE-2026-20934
Alta · 7.5
CWE-362 13/01/2026
Windows SMB Server Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-20932
Média · 5.5
CWE-200 13/01/2026
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-2026-20931
Alta · 8.0
CWE-73 13/01/2026
Windows Telephony Service Elevation of Privilege Vulnerability
External control of file name or path in Windows Telephony Service allows an authorized attacker to elevate privileges over an adjacent network.
CVE-2026-20929
Alta · 7.5
Exploit público CWE-284 13/01/2026
Windows HTTP.sys Elevation of Privilege Vulnerability
Improper access control in Windows HTTP.sys allows an authorized attacker to elevate privileges over a network.
CVE-2026-20927
Média · 5.3
CWE-362 13/01/2026
Windows SMB Server Denial of Service Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to deny service over a network.
CVE-2026-20926
Alta · 7.5
CWE-362 13/01/2026
Windows SMB Server Elevation of Privilege Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
CVE-2026-20925
Média · 6.5
CWE-73 13/01/2026
NTLM Hash Disclosure Spoofing Vulnerability
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.