Windows 10 21H1 vulnerabilitiesAnd the versions its exploited flaws hit.
Windows 10 21H1 is made by Microsoft. We track 89 published vulnerabilities in it, across 76 versions. 44 of them are on the list of flaws known to be exploited, the newest added on 23 April 2024. If you run Windows 10 21H1, check your version against the exploited flaws below and patch those first.
The most recent Windows 10 21H1 flaw added to the known-exploited list is CVE-2022-38028, on 23 April 2024. We keep watching the known-exploited list.
Which versions of Windows 10 21H1 do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "before 10.0.19043.2130" means every version up to, but not including, 10.0.19043.2130. Find your version, then patch.
- CVE-2022-38028Exploited list, 23 Apr 2024
Microsoft Windows Print Spooler Privilege Escalation Vulnerability
before 10.0.19043.2130 - CVE-2023-36584Exploited list, 16 Nov 2023
Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
before 10.0.19041.3570 - CVE-2022-44698Exploited list, 13 Dec 2022
Microsoft Defender SmartScreen Security Feature Bypass Vulnerability
before 10.0.19043.2364 - CVE-2022-41049Exploited list, 14 Nov 2022
Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
before 10.0.19043.2251 - CVE-2022-41125Exploited list, 8 Nov 2022
Microsoft Windows CNG Key Isolation Service Privilege Escalation Vulnerability
before 10.0.19043.2251 - CVE-2022-41091Exploited list, 8 Nov 2022
Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
before 10.0.19043.2251 - CVE-2022-41073Exploited list, 8 Nov 2022
Microsoft Windows Print Spooler Privilege Escalation Vulnerability
before 10.0.19043.2251 - CVE-2022-41128Exploited list, 8 Nov 2022
Microsoft Windows Scripting Languages Remote Code Execution Vulnerability
before 10.0.19043.2251 - CVE-2022-41033Exploited list, 11 Oct 2022
Microsoft Windows COM+ Event System Service Privilege Escalation Vulnerability
before 10.0.19043.2130 - CVE-2022-37969Exploited list, 14 Sep 2022
Microsoft Windows Common Log File System (CLFS) Driver Privilege Escalation Vulnerability
before 10.0.19043.2006 - CVE-2022-26923Exploited list, 18 Aug 2022
Microsoft Active Directory Domain Services Privilege Escalation Vulnerability
before 10.0.19043.1706 - CVE-2022-21971Exploited list, 18 Aug 2022
Microsoft Windows Runtime Remote Code Execution Vulnerability
before 10.0.19043.1526 - CVE-2022-34713Exploited list, 9 Aug 2022
Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability
before 10.0.19043.1889 - CVE-2022-22047Exploited list, 12 Jul 2022
Microsoft Windows Client Server Runtime Subsystem (CSRSS) Privilege Escalation Vulnerability
before 10.0.19043.1826 - CVE-2022-26925Exploited list, 1 Jul 2022
Microsoft Windows LSA Spoofing Vulnerability
before 10.0.19043.1706 - CVE-2022-30190Exploited list, 14 Jun 2022
Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability
before 10.0.19043.1766 - CVE-2021-41357Exploited list, 25 Apr 2022
Microsoft Win32k Privilege Escalation Vulnerability
before 10.0.19043.1288 - CVE-2022-21919Exploited list, 25 Apr 2022
Microsoft Windows User Profile Service Privilege Escalation Vulnerability
before 10.0.19043.1466 - CVE-2021-40450Exploited list, 25 Apr 2022
Microsoft Win32k Privilege Escalation Vulnerability
before 10.0.19043.1288 - CVE-2022-26904Exploited list, 25 Apr 2022
Microsoft Windows User Profile Service Privilege Escalation Vulnerability
before 10.0.19043.1645 - CVE-2022-22718Exploited list, 19 Apr 2022
Microsoft Windows Print Spooler Privilege Escalation Vulnerability
before 10.0.19043.1526 - CVE-2022-24521Exploited list, 13 Apr 2022
Microsoft Windows CLFS Driver Privilege Escalation Vulnerability
before 10.0.19043.1645 - CVE-2021-34484Exploited list, 31 Mar 2022
Microsoft Windows User Profile Service Privilege Escalation Vulnerability
before 10.0.19043.1165 - CVE-2021-34486Exploited list, 28 Mar 2022
Microsoft Windows Event Tracing Privilege Escalation Vulnerability
before 10.0.19043.1165 - CVE-2022-21999Exploited list, 25 Mar 2022
Microsoft Windows Print Spooler Privilege Escalation Vulnerability
before 10.0.19043.1526 - CVE-2021-41379Exploited list, 3 Mar 2022
Microsoft Windows Installer Privilege Escalation Vulnerability
before 10.0.19043.1348 - CVE-2021-36934Exploited list, 10 Feb 2022
Microsoft Windows SAM Local Privilege Escalation Vulnerability
before 10.0.19043.1165 - CVE-2022-21882Exploited list, 4 Feb 2022
Microsoft Win32k Privilege Escalation Vulnerability
before 10.0.19043.1466
2 more exploited flaws name Windows 10 21H1 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 44 exploited flaws. The full list is below.
Which Windows 10 21H1 vulnerabilities are being exploited?
44 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 Print Spooler Privilege Escalation Vulnerability
Microsoft Windows Print Spooler service contains a privilege escalation vulnerability.
- 5.4Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
Microsoft Windows Mark of the Web (MOTW) contains a security feature bypass vulnerability resulting in a limited loss of integrity and availability of security features.
- 5.4Microsoft Defender SmartScreen Security Feature Bypass Vulnerability
Microsoft Defender SmartScreen contains a security feature bypass vulnerability that could allow an attacker to evade Mark of the Web (MOTW) defenses via a specially crafted malicious file.
- 5.4Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
Microsoft Windows Mark of the Web (MOTW) contains a security feature bypass vulnerability resulting in a limited loss of integrity and availability of security features.
- 7.8Microsoft Windows CNG Key Isolation Service Privilege Escalation Vulnerability
Microsoft Windows Cryptographic Next Generation (CNG) Key Isolation Service contains an unspecified vulnerability that allows an attacker to gain SYSTEM-level privileges.
- 5.4Microsoft Windows Mark of the Web (MOTW) Security Feature Bypass Vulnerability
Microsoft Windows Mark of the Web (MOTW) contains a security feature bypass vulnerability resulting in a limited loss of integrity and availability of security features.
- 7.8Microsoft Windows Print Spooler Privilege Escalation Vulnerability
Microsoft Windows Print Spooler contains an unspecified vulnerability that allows an attacker to gain SYSTEM-level privileges.
- 8.8Microsoft Windows Scripting Languages Remote Code Execution Vulnerability
Microsoft Windows contains an unspecified vulnerability in the JScript9 scripting language which allows for remote code execution.
Which Windows 10 21H1 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%
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.
- 85%
Windows Print Spooler Remote Code Execution Vulnerability
- 84%
Active Directory Domain Services Elevation of Privilege Vulnerability
- 81%
Windows Kernel Information Disclosure Vulnerability
- 76%
Windows SmartScreen Security Feature Bypass Vulnerability
- 74%
Win32k Elevation of Privilege Vulnerability
- 68%
Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability
- 67%
<p>An elevation of privilege vulnerability exists because of overly permissive Access Control Lists (ACLs) on multiple system files, including the Security Accounts Manager (SAM) database.
- 59%
Windows MSHTML Platform Remote Code Execution Vulnerability
Running Windows 10 21H1? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
Microsoft Windows Print Spooler service contains a privilege escalation vulnerability. An attacker may modify a JavaScript constraints file and execute it with SYSTEM-level permissions.
- Matched to
- Windows 10 21H1 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 89 published vulnerabilities listed under the name Windows 10 21H1, across 76 versions. The most recent Windows 10 21H1 flaw added to the known-exploited list is CVE-2022-38028, on 23 April 2024.
44 are on the list of flaws known to be exploited. The most recently added are CVE-2022-38028, CVE-2023-36584 and CVE-2022-44698.
Each flaw names its own versions, usually as ranges. The newest, CVE-2022-38028, affects before 10.0.19043.2130. The versions for every exploited flaw are listed on this page.
Create a Precursor Intelligence account and track Windows 10 21H1. 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.