Microsoft Windows Server 2022 vulnerabilities
2,874 known vulnerabilities affecting microsoft/windows_server_2022.
Total CVEs
2,874
CISA KEV
103
actively exploited
Public exploits
43
Exploited in wild
85
Severity breakdown
CRITICAL76HIGH2062MEDIUM725LOW11
Vulnerabilities
Page 14 of 144
CVE-2026-20926HIGHCVSS 7.5fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20816HIGHCVSS 7.0fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
CVE-2026-20816 [HIGH] CWE-367 CVE-2026-20816: Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker
Time-of-check time-of-use (toctou) race condition in Windows Installer allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-20857HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20921HIGHCVSS 7.5fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20822HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20856HIGHCVSS 8.1fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20922HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20831HIGHCVSS 7.0fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20919HIGHCVSS 7.5fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
CVE-2026-20919 [HIGH] CWE-362 CVE-2026-20919: 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.
nvd
CVE-2026-20931HIGHCVSS 8.0fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20814HIGHCVSS 7.0fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20826HIGHCVSS 7.0fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
CVE-2026-20826 [HIGH] CWE-362 CVE-2026-20826: Concurrent execution using shared resource with improper synchronization ('race condition') in Table
Concurrent execution using shared resource with improper synchronization ('race condition') in Tablet Windows User Interface (TWINUI) Subsystem allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-20924HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20809HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20858HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
CVE-2026-20858 [HIGH] CWE-362 CVE-2026-20858: 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.
nvd
CVE-2026-20867HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd
CVE-2026-20871HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
CVE-2026-20871 [HIGH] CWE-416 CVE-2026-20871: Use after free in Desktop Windows Manager allows an authorized attacker to elevate privileges locall
Use after free in Desktop Windows Manager allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-20920HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
CVE-2026-20920 [HIGH] CWE-416 CVE-2026-20920: Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally
Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
nvd
CVE-2026-20868HIGHCVSS 8.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
CVE-2026-20868 [HIGH] CWE-122 CVE-2026-20868: Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorize
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code over a network.
nvd
CVE-2026-20923HIGHCVSS 7.8fixed in 10.0.20348.4648≥ 10.0.20348.0, < 10.0.20348.46482026-01-13
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.
nvd