Microsoft Windows Server 2019 vulnerabilities
3,523 known vulnerabilities affecting microsoft/windows_server_2019.
Total CVEs
3,523
CISA KEV
123
actively exploited
Public exploits
55
Exploited in wild
113
Severity breakdown
CRITICAL104HIGH2472MEDIUM933LOW14
Vulnerabilities
Page 10 of 177
CVE-2026-20804HIGHCVSS 7.7fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20804 [HIGH] CWE-266 CVE-2026-20804: Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
cvelistv5nvd
CVE-2026-20852HIGHCVSS 7.7fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20852 [HIGH] CWE-266 CVE-2026-20852: Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering
Incorrect privilege assignment in Windows Hello allows an unauthorized attacker to perform tampering locally.
cvelistv5nvd
CVE-2026-20869HIGHCVSS 7.0fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20869 [HIGH] CWE-362 CVE-2026-20869: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Local Session Manager (LSM) allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20867HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20867 [HIGH] CWE-362 CVE-2026-20867: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20822HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20822 [HIGH] CWE-416 CVE-2026-20822: Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges l
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20849HIGHCVSS 7.5fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20849 [HIGH] CWE-807 CVE-2026-20849: Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacke
Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.
cvelistv5nvd
CVE-2026-20861HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20861 [HIGH] CWE-362 CVE-2026-20861: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20848HIGHCVSS 7.5fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20848 [HIGH] CWE-362 CVE-2026-20848: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
cvelistv5nvd
CVE-2026-20873HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20873 [HIGH] CWE-362 CVE-2026-20873: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20843HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20843 [HIGH] CWE-284 CVE-2026-20843: Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized att
Improper access control in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20832HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20832 [HIGH] CWE-415 CVE-2026-20832: Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerabili
Windows Remote Procedure Call Interface Definition Language (IDL) Elevation of Privilege Vulnerability
cvelistv5nvd
CVE-2026-20860HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20860 [HIGH] CWE-843 CVE-2026-20860: Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver f
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20926HIGHCVSS 7.5fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20926 [HIGH] CWE-362 CVE-2026-20926: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
cvelistv5nvd
CVE-2026-20857HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20857 [HIGH] CWE-822 CVE-2026-20857: Untrusted pointer dereference in Windows Cloud Files Mini Filter Driver allows an authorized attacke
Untrusted pointer dereference in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20921HIGHCVSS 7.5fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20921 [HIGH] CWE-362 CVE-2026-20921: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB Server allows an authorized attacker to elevate privileges over a network.
cvelistv5nvd
CVE-2026-20918HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20918 [HIGH] CWE-362 CVE-2026-20918: Concurrent execution using shared resource with improper synchronization ('race condition') in Windo
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20940HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20940 [HIGH] CWE-822 CVE-2026-20940: Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker t
Heap-based buffer overflow in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20831HIGHCVSS 7.0fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20831 [HIGH] CWE-367 CVE-2026-20831: Time-of-check time-of-use (toctou) race condition in Windows Ancillary Function Driver for WinSock a
Time-of-check time-of-use (toctou) race condition in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20856HIGHCVSS 8.1fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20856 [HIGH] CWE-20 CVE-2026-20856: Improper input validation in Windows Server Update Service allows an unauthorized attacker to execut
Improper input validation in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
cvelistv5nvd
CVE-2026-20922HIGHCVSS 7.8fixed in 10.0.17763.8276≥ 10.0.17763.0, < 10.0.17763.82762026-01-13
CVE-2026-20922 [HIGH] CWE-122 CVE-2026-20922: Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
Heap-based buffer overflow in Windows NTFS allows an authorized attacker to execute code locally.
cvelistv5nvd