Microsoft Windows Server 2025 vulnerabilities

1,143 known vulnerabilities affecting microsoft/windows_server_2025.

Total CVEs
1,143
CISA KEV
36
actively exploited
Public exploits
17
Exploited in wild
5
Severity breakdown
CRITICAL14HIGH797MEDIUM327LOW5

Vulnerabilities

Page 12 of 58
CVE-2026-20808HIGHCVSS 7.0fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20808 [HIGH] CWE-362 CVE-2026-20808: Concurrent execution using shared resource with improper synchronization ('race condition') in Print Concurrent execution using shared resource with improper synchronization ('race condition') in Printer Association Object allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20863HIGHCVSS 7.0fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20863 [HIGH] CWE-415 CVE-2026-20863: Double free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally. Double free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20832HIGHCVSS 7.8fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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-2026-20859HIGHCVSS 7.8fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20859 [HIGH] CWE-416 CVE-2026-20859: Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges lo Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20831HIGHCVSS 7.0fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
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
CVE-2026-20830HIGHCVSS 7.0fixed in 10.0.26100.7623≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20830 [HIGH] CWE-362 CVE-2026-20830: Concurrent execution using shared resource with improper synchronization ('race condition') in Capab Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20934HIGHCVSS 7.5fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20934 [HIGH] CWE-362 CVE-2026-20934: 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-2026-20931HIGHCVSS 8.0fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20931 [HIGH] CWE-73 CVE-2026-20931: External control of file name or path in Windows Telephony Service allows an authorized attacker to External control of file name or path in Windows Telephony Service allows an authorized attacker to elevate privileges over an adjacent network.
cvelistv5nvd
CVE-2026-20814HIGHCVSS 7.0fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20814 [HIGH] CWE-362 CVE-2026-20814: Concurrent execution using shared resource with improper synchronization ('race condition') in Graph Concurrent execution using shared resource with improper synchronization ('race condition') in Graphics Kernel allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20924HIGHCVSS 7.8fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20924 [HIGH] CWE-362 CVE-2026-20924: Use after free in Windows Management Services allows an authorized attacker to elevate privileges lo Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20809HIGHCVSS 7.8fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20809 [HIGH] CWE-122 CVE-2026-20809: Time-of-check time-of-use (toctou) race condition in Windows Kernel Memory allows an authorized atta Time-of-check time-of-use (toctou) race condition in Windows Kernel Memory allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
CVE-2026-20866HIGHCVSS 7.8fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20866 [HIGH] CWE-362 CVE-2026-20866: 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-2026-20923HIGHCVSS 7.8fixed in 10.0.26100.32230≥ 10.0.26100.0, < 10.0.26100.322302026-01-13
CVE-2026-20923 [HIGH] CWE-416 CVE-2026-20923: Use after free in Windows Management Services allows an authorized attacker to elevate privileges lo Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.
cvelistv5nvd
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