Windows Server 2022 vulnerabilitiesAnd the versions its exploited flaws hit.
Windows Server 2022 is made by Microsoft. We track 2,137 published vulnerabilities listed under that exact name, across 89 versions. 94 of them are on the list of flaws known to be exploited, the newest added on 8 September 2026. Microsoft lists newer releases under their own names, such as Windows Server 2022 23H2, so check those pages too.
The most recent Windows Server 2022 flaw added to the known-exploited list is CVE-2026-85880, on 8 September 2026. We keep watching the known-exploited list.
Is Windows Server 2022 listed under other names? Yes.
Microsoft also lists Windows Server 2022 under more specific names, such as Windows Server 2022 23H2. Flaws listed only under those names are counted on their own pages, not here. If you run one of these, open its page for its own exploited flaws.
Which versions of Windows Server 2022 do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "before 10.0.20348.5622" means every version up to, but not including, 10.0.20348.5622. Find your version, then patch.
- CVE-2026-85880Exploited list, 8 Sep 2026
Microsoft Windows Heap-Based Buffer Overflow Vulnerability
before 10.0.20348.5622 - CVE-2026-56155Exploited list, 14 Jul 2026
Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability
before 10.0.20348.5386 - CVE-2025-59287Exploited list, 24 Oct 2025
Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability
before 10.0.20348.4297 - CVE-2025-33073Exploited list, 20 Oct 2025
Microsoft Windows SMB Client Improper Access Control Vulnerability
before 10.0.20348.3745 - CVE-2025-24990Exploited list, 14 Oct 2025
Microsoft Windows Untrusted Pointer Dereference Vulnerability
before 10.0.20348.4294 - CVE-2025-59230Exploited list, 14 Oct 2025
Microsoft Windows Improper Access Control Vulnerability
before 10.0.20348.4294 - CVE-2025-47827Exploited list, 14 Oct 2025
IGEL OS Use of a Key Past its Expiration Date Vulnerability
before 10.0.20348.4294 - CVE-2025-33053Exploited list, 10 Jun 2025
Microsoft Windows External Control of File Name or Path Vulnerability
before 10.0.20348.3807 - CVE-2025-32706Exploited list, 13 May 2025
Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability
before 10.0.20348.3692 - CVE-2025-32701Exploited list, 13 May 2025
Microsoft Windows Common Log File System (CLFS) Driver Use-After-Free Vulnerability
before 10.0.20348.3692 - CVE-2025-30400Exploited list, 13 May 2025
Microsoft Windows DWM Core Library Use-After-Free Vulnerability
before 10.0.20348.3692 - CVE-2025-30397Exploited list, 13 May 2025
Microsoft Windows Scripting Engine Type Confusion Vulnerability
before 10.0.20348.3692 - CVE-2025-32709Exploited list, 13 May 2025
Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability
before 10.0.20348.3692 - CVE-2025-24054Exploited list, 17 Apr 2025
Microsoft Windows NTLM Hash Disclosure Spoofing Vulnerability
before 10.0.20348.3270 - CVE-2025-29824Exploited list, 8 Apr 2025
Microsoft Windows Common Log File System (CLFS) Driver Use-After-Free Vulnerability
before 10.0.20348.3453 - CVE-2025-24991Exploited list, 11 Mar 2025
Microsoft Windows NTFS Out-Of-Bounds Read Vulnerability
before 10.0.20348.3270 - CVE-2025-24993Exploited list, 11 Mar 2025
Microsoft Windows NTFS Heap-Based Buffer Overflow Vulnerability
before 10.0.20348.3270 - CVE-2025-24985Exploited list, 11 Mar 2025
Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability
before 10.0.20348.3328 - CVE-2025-24984Exploited list, 11 Mar 2025
Microsoft Windows NTFS Information Disclosure Vulnerability
before 10.0.20348.3328 - CVE-2025-26633Exploited list, 11 Mar 2025
Microsoft Windows Management Console (MMC) Improper Neutralization Vulnerability
before 10.0.20348.3270 - CVE-2025-21418Exploited list, 11 Feb 2025
Microsoft Windows Ancillary Function Driver for WinSock Heap-Based Buffer Overflow Vulnerability
before 10.0.20348.3207 - CVE-2025-21391Exploited list, 11 Feb 2025
Microsoft Windows Storage Link Following Vulnerability
before 10.0.20348.3207 - CVE-2024-35250Exploited list, 16 Dec 2024
Microsoft Windows Kernel-Mode Driver Untrusted Pointer Dereference Vulnerability
before 10.0.20348.2522 - CVE-2024-49138Exploited list, 10 Dec 2024
Microsoft Windows Common Log File System (CLFS) Driver Heap-Based Buffer Overflow Vulnerability
before 10.0.20348.2966 - CVE-2024-43451Exploited list, 12 Nov 2024
Microsoft Windows NTLMv2 Hash Disclosure Spoofing Vulnerability
before 10.0.20348.2849 - CVE-2024-49039Exploited list, 12 Nov 2024
Microsoft Windows Task Scheduler Privilege Escalation Vulnerability
before 10.0.20348.2849 - CVE-2024-30088Exploited list, 15 Oct 2024
Microsoft Windows Kernel TOCTOU Race Condition Vulnerability
before 10.0.20348.2522 - CVE-2024-43572Exploited list, 8 Oct 2024
Microsoft Windows Management Console Remote Code Execution Vulnerability
before 10.0.20348..2762
2 more exploited flaws name Windows Server 2022 without a version of its own, for example as the system other affected software runs on. They are in the list below.
Showing the 30 most recently added of 94 exploited flaws. The full list is below.
Which Windows Server 2022 vulnerabilities are being exploited?
50 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.
- 7.8Microsoft Windows Heap-Based Buffer Overflow Vulnerability
Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally.
- 7.8Microsoft Active Directory Federation Services Insufficient Granularity of Access Control Vulnerability
Microsoft Active Directory Federation Services contains an insufficient granularity of access control vulnerability that allows an authorized attacker to elevate privileges locally.
- 7.8Microsoft Windows Out-of-Bounds Read Vulnerability
Microsoft Windows Common Log File System Driver contains an out-of-bounds read vulnerability that could allow a threat actor for privileges escalation
- 9.8Microsoft Windows Server Update Service (WSUS) Deserialization of Untrusted Data Vulnerability
Microsoft Windows Server Update Service (WSUS) contains a deserialization of untrusted data vulnerability that allows for remote code execution.
- 8.8Microsoft Windows SMB Client Improper Access Control Vulnerability
Microsoft Windows SMB Client contains an improper access control vulnerability that could allow for privilege escalation.
- 7.8Microsoft Windows Untrusted Pointer Dereference Vulnerability
Microsoft Windows Agere Modem Driver contains an untrusted pointer dereference vulnerability that allows for privilege escalation.
- 7.8Microsoft Windows Improper Access Control Vulnerability
Microsoft Windows contains an improper access control vulnerability in Windows Remote Access Connection Manager which could allow an authorized attacker to elevate privileges locally.
- 4.6IGEL OS Use of a Key Past its Expiration Date Vulnerability
IGEL OS contains a use of a key past its expiration date vulnerability that allows for Secure Boot bypass.
Which Windows Server 2022 flaws are most likely to be used?
Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- >99%
<p>A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations.
- >99%
A remote code execution vulnerability exists when MSDT is called using the URL protocol from a calling application such as Word.
- 98%
<p>Microsoft is investigating reports of a remote code execution vulnerability in MSHTML that affects Microsoft Windows.
- 95%CVE-2023-21554Critical
Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability
- 95%CVE-2023-24941Critical
Windows Network File System Remote Code Execution Vulnerability
- 93%CVE-2023-35628High
Windows MSHTML Platform Remote Code Execution Vulnerability
- 93%CVE-2023-28302High
Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability
- 93%CVE-2023-21758High
Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability
- 91%CVE-2022-26809Critical
Remote Procedure Call Runtime Remote Code Execution Vulnerability
- 89%CVE-2023-21547High
Internet Key Exchange (IKE) Protocol Denial of Service Vulnerability
Running Windows Server 2022? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
Microsoft Windows Advanced Local Procedure Call contains a heap-based buffer overflow vulnerability that allows an attacker to elevate privileges locally.
- Matched to
- Windows Server 2022 on Acme's software list
- What to do
- Patch first, then check for signs of use
Sent to the alert recipients Acme chose. Also in the app and to Acme's webhook.
We track 2,137 published vulnerabilities listed under the name Windows Server 2022, across 89 versions. The most recent Windows Server 2022 flaw added to the known-exploited list is CVE-2026-85880, on 8 September 2026.
94 are on the list of flaws known to be exploited. The most recently added are CVE-2026-85880, CVE-2026-56155 and CVE-2023-36424.
Microsoft also lists Windows Server 2022 under more specific names, such as Windows Server 2022 23H2. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list.
Each flaw names its own versions, usually as ranges. The newest, CVE-2026-85880, affects before 10.0.20348.5622. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Windows Server 2022. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.