# Windows 10 1909 vulnerabilities > Windows 10 1909 is made by Microsoft. We track 58 published vulnerabilities in it, across 58 versions. 50 of them are on the list of flaws known to be exploited, the newest added on 18 August 2022. If you run Windows 10 1909, check your version against the exploited flaws below and patch those first. Canonical page: https://www.precursorintelligence.com/product/microsoft/windows_10_1909 ## At a glance - **Made by:** [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) - **Published vulnerabilities:** 58 - **Known to be exploited:** 50 - **Versions tracked:** 58 - **Most recently added to the known-exploited list:** [CVE-2022-21971](https://www.precursorintelligence.com/what-is/cve-2022-21971), 18 August 2022. We keep watching the list. ## Which versions of Windows 10 1909 do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "before 10.0.18363.2094" means every version up to, but not including, 10.0.18363.2094. - [CVE-2022-21971](https://www.precursorintelligence.com/what-is/cve-2022-21971) (Microsoft Windows Runtime Remote Code Execution Vulnerability): before 10.0.18363.2094 - [CVE-2022-26923](https://www.precursorintelligence.com/what-is/cve-2022-26923) (Microsoft Active Directory Domain Services Privilege Escalation Vulnerability): before 10.0.18363.2274 - [CVE-2022-26925](https://www.precursorintelligence.com/what-is/cve-2022-26925) (Microsoft Windows LSA Spoofing Vulnerability): before 10.0.18363.2274 - [CVE-2021-40450](https://www.precursorintelligence.com/what-is/cve-2021-40450) (Microsoft Win32k Privilege Escalation Vulnerability): before 10.0.18363.1854 - [CVE-2022-26904](https://www.precursorintelligence.com/what-is/cve-2022-26904) (Microsoft Windows User Profile Service Privilege Escalation Vulnerability): before 10.0.18363.2212 - [CVE-2022-21919](https://www.precursorintelligence.com/what-is/cve-2022-21919) (Microsoft Windows User Profile Service Privilege Escalation Vulnerability): before 10.0.18363.2037 - [CVE-2022-22718](https://www.precursorintelligence.com/what-is/cve-2022-22718) (Microsoft Windows Print Spooler Privilege Escalation Vulnerability): up to 10.0.18363.2094 - [CVE-2022-24521](https://www.precursorintelligence.com/what-is/cve-2022-24521) (Microsoft Windows CLFS Driver Privilege Escalation Vulnerability): before 10.0.18363.2212 - [CVE-2021-34484](https://www.precursorintelligence.com/what-is/cve-2021-34484) (Microsoft Windows User Profile Service Privilege Escalation Vulnerability): before 10.0.18363.1734 - [CVE-2021-34486](https://www.precursorintelligence.com/what-is/cve-2021-34486) (Microsoft Windows Event Tracing Privilege Escalation Vulnerability): before 10.0.18363.1734 - [CVE-2022-21999](https://www.precursorintelligence.com/what-is/cve-2022-21999) (Microsoft Windows Print Spooler Privilege Escalation Vulnerability): before 10.0.18363.2094 - [CVE-2021-41379](https://www.precursorintelligence.com/what-is/cve-2021-41379) (Microsoft Windows Installer Privilege Escalation Vulnerability): before 10.0.18363.1916 - [CVE-2021-36934](https://www.precursorintelligence.com/what-is/cve-2021-36934) (Microsoft Windows SAM Local Privilege Escalation Vulnerability): before 10.0.18363.1734 - [CVE-2022-21882](https://www.precursorintelligence.com/what-is/cve-2022-21882) (Microsoft Win32k Privilege Escalation Vulnerability): before 10.0.18363.2037 - [CVE-2021-40449](https://www.precursorintelligence.com/what-is/cve-2021-40449) (Microsoft Windows Win32k Privilege Escalation Vulnerability): before 10.0.18363.1854 - [CVE-2021-31199](https://www.precursorintelligence.com/what-is/cve-2021-31199) (Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability): before 10.0.18363.1621 - [CVE-2021-31201](https://www.precursorintelligence.com/what-is/cve-2021-31201) (Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability): before 10.0.18363.1621 - [CVE-2021-31955](https://www.precursorintelligence.com/what-is/cve-2021-31955) (Microsoft Windows Kernel Information Disclosure Vulnerability): before 10.0.18363.1621 - [CVE-2021-31956](https://www.precursorintelligence.com/what-is/cve-2021-31956) (Microsoft Windows NTFS Privilege Escalation Vulnerability): before 10.0.18363.1621 - [CVE-2021-31979](https://www.precursorintelligence.com/what-is/cve-2021-31979) (Microsoft Windows Kernel Privilege Escalation Vulnerability): before 10.0.18363.1679 - [CVE-2021-33739](https://www.precursorintelligence.com/what-is/cve-2021-33739) (Microsoft Desktop Window Manager (DWM) Core Library Privilege Escalation Vulnerability): before 10.0.18363.1621 - [CVE-2021-33742](https://www.precursorintelligence.com/what-is/cve-2021-33742) (Microsoft Windows MSHTML Platform Remote Code Execution Vulnerability): before 10.0.18363.1621 - [CVE-2021-33771](https://www.precursorintelligence.com/what-is/cve-2021-33771) (Microsoft Windows Kernel Privilege Escalation Vulnerability): before 10.0.18363.1679 7 more exploited flaws name Windows 10 1909 without a version of its own (for example as the system other affected software runs on). They are in the list below. Checked: the 30 most recently added of 50 exploited flaws. ## Which Windows 10 1909 vulnerabilities are being exploited? 50 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2022-21971](https://www.precursorintelligence.com/what-is/cve-2022-21971): Microsoft Windows Runtime Remote Code Execution Vulnerability. High, CVSS 7.8, chance of use in 30 days 54%, known exploited since 18 August 2022. - [CVE-2022-26923](https://www.precursorintelligence.com/what-is/cve-2022-26923): Microsoft Active Directory Domain Services Privilege Escalation Vulnerability. High, CVSS 8.8, chance of use in 30 days 84%, known exploited since 18 August 2022. - [CVE-2022-26925](https://www.precursorintelligence.com/what-is/cve-2022-26925): Microsoft Windows LSA Spoofing Vulnerability. High, CVSS 8.1, chance of use in 30 days 10%, known exploited since 1 July 2022. - [CVE-2020-1027](https://www.precursorintelligence.com/what-is/cve-2020-1027): Microsoft Windows Kernel Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 4.5%, known exploited since 23 May 2022. - [CVE-2020-0638](https://www.precursorintelligence.com/what-is/cve-2020-0638): Microsoft Update Notification Manager Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 2.4%, known exploited since 23 May 2022. - [CVE-2021-40450](https://www.precursorintelligence.com/what-is/cve-2021-40450): Microsoft Win32k Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 1.6%, known exploited since 25 April 2022. - [CVE-2022-26904](https://www.precursorintelligence.com/what-is/cve-2022-26904): Microsoft Windows User Profile Service Privilege Escalation Vulnerability. High, CVSS 7.0, chance of use in 30 days 17%, known exploited since 25 April 2022. - [CVE-2022-21919](https://www.precursorintelligence.com/what-is/cve-2022-21919): Microsoft Windows User Profile Service Privilege Escalation Vulnerability. High, CVSS 7.0, chance of use in 30 days 2.4%, known exploited since 25 April 2022. - [CVE-2022-22718](https://www.precursorintelligence.com/what-is/cve-2022-22718): Microsoft Windows Print Spooler Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 18%, known exploited since 19 April 2022. - [CVE-2022-24521](https://www.precursorintelligence.com/what-is/cve-2022-24521): Microsoft Windows CLFS Driver Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 7.1%, known exploited since 13 April 2022. - [CVE-2021-34484](https://www.precursorintelligence.com/what-is/cve-2021-34484): Microsoft Windows User Profile Service Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 22%, known exploited since 31 March 2022. - [CVE-2021-34486](https://www.precursorintelligence.com/what-is/cve-2021-34486): Microsoft Windows Event Tracing Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 9.3%, known exploited since 28 March 2022. - [CVE-2022-21999](https://www.precursorintelligence.com/what-is/cve-2022-21999): Microsoft Windows Print Spooler Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 41%, known exploited since 25 March 2022. - [CVE-2021-41379](https://www.precursorintelligence.com/what-is/cve-2021-41379): Microsoft Windows Installer Privilege Escalation Vulnerability. Medium, CVSS 5.5, chance of use in 30 days 19%, known exploited since 3 March 2022. - [CVE-2020-0796](https://www.precursorintelligence.com/what-is/cve-2020-0796): Microsoft SMBv3 Remote Code Execution Vulnerability. Critical, CVSS 10.0, chance of use in 30 days >99%, known exploited since 10 February 2022. - [CVE-2021-36934](https://www.precursorintelligence.com/what-is/cve-2021-36934): Microsoft Windows SAM Local Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 67%, known exploited since 10 February 2022. - [CVE-2022-21882](https://www.precursorintelligence.com/what-is/cve-2022-21882): Microsoft Win32k Privilege Escalation Vulnerability. High, CVSS 7.0, chance of use in 30 days 59%, known exploited since 4 February 2022. - [CVE-2020-0787](https://www.precursorintelligence.com/what-is/cve-2020-0787): Microsoft Windows Background Intelligent Transfer Service (BITS) Improper Privilege Management Vulnerability. High, CVSS 7.8, chance of use in 30 days 43%, known exploited since 28 January 2022. - [CVE-2013-3900](https://www.precursorintelligence.com/what-is/cve-2013-3900): Microsoft WinVerifyTrust function Remote Code Execution. Medium, CVSS 5.5, chance of use in 30 days 45%, known exploited since 10 January 2022. - [CVE-2021-43890](https://www.precursorintelligence.com/what-is/cve-2021-43890): Microsoft Windows AppX Installer Spoofing Vulnerability. High, CVSS 7.1, chance of use in 30 days 11%, known exploited since 15 December 2021. - [CVE-2021-40449](https://www.precursorintelligence.com/what-is/cve-2021-40449): Microsoft Windows Win32k Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 74%, known exploited since 17 November 2021. - [CVE-2021-28310](https://www.precursorintelligence.com/what-is/cve-2021-28310): Microsoft Win32k Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 8.4%, known exploited since 3 November 2021. - [CVE-2021-31199](https://www.precursorintelligence.com/what-is/cve-2021-31199): Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability. Medium, CVSS 5.2, chance of use in 30 days 3.0%, known exploited since 3 November 2021. - [CVE-2021-31201](https://www.precursorintelligence.com/what-is/cve-2021-31201): Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability. Medium, CVSS 5.2, chance of use in 30 days 2.6%, known exploited since 3 November 2021. - [CVE-2021-31955](https://www.precursorintelligence.com/what-is/cve-2021-31955): Microsoft Windows Kernel Information Disclosure Vulnerability. Medium, CVSS 5.5, chance of use in 30 days 81%, known exploited since 3 November 2021. - [CVE-2021-31956](https://www.precursorintelligence.com/what-is/cve-2021-31956): Microsoft Windows NTFS Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 22%, known exploited since 3 November 2021. - [CVE-2021-31979](https://www.precursorintelligence.com/what-is/cve-2021-31979): Microsoft Windows Kernel Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 4.5%, known exploited since 3 November 2021. - [CVE-2021-33739](https://www.precursorintelligence.com/what-is/cve-2021-33739): Microsoft Desktop Window Manager (DWM) Core Library Privilege Escalation Vulnerability. High, CVSS 8.4, chance of use in 30 days 6.6%, known exploited since 3 November 2021. - [CVE-2021-33742](https://www.precursorintelligence.com/what-is/cve-2021-33742): Microsoft Windows MSHTML Platform Remote Code Execution Vulnerability. High, CVSS 7.5, chance of use in 30 days 59%, known exploited since 3 November 2021. - [CVE-2021-33771](https://www.precursorintelligence.com/what-is/cve-2021-33771): Microsoft Windows Kernel Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 10%, known exploited since 3 November 2021. - [CVE-2021-34448](https://www.precursorintelligence.com/what-is/cve-2021-34448): Microsoft Windows Scripting Engine Memory Corruption Vulnerability. Medium, CVSS 6.8, chance of use in 30 days 40%, known exploited since 3 November 2021. - [CVE-2020-1380](https://www.precursorintelligence.com/what-is/cve-2020-1380): Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability. High, CVSS 7.8, chance of use in 30 days 24%, known exploited since 3 November 2021. - [CVE-2020-1054](https://www.precursorintelligence.com/what-is/cve-2020-1054): Microsoft Win32k Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 54%, known exploited since 3 November 2021. - [CVE-2020-0601](https://www.precursorintelligence.com/what-is/cve-2020-0601): Microsoft Windows CryptoAPI Spoofing Vulnerability. High, CVSS 8.1, chance of use in 30 days 89%, known exploited since 3 November 2021. - [CVE-2021-36948](https://www.precursorintelligence.com/what-is/cve-2021-36948): Microsoft Windows Update Medic Service Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 23%, known exploited since 3 November 2021. - [CVE-2021-36955](https://www.precursorintelligence.com/what-is/cve-2021-36955): Microsoft Windows Common Log File System (CLFS) Driver Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 4.1%, known exploited since 3 November 2021. - [CVE-2021-40444](https://www.precursorintelligence.com/what-is/cve-2021-40444): Microsoft MSHTML Remote Code Execution Vulnerability. High, CVSS 8.8, chance of use in 30 days 98%, known exploited since 3 November 2021. - [CVE-2020-1020](https://www.precursorintelligence.com/what-is/cve-2020-1020): Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability. High, CVSS 8.8, chance of use in 30 days 65%, known exploited since 3 November 2021. - [CVE-2020-0986](https://www.precursorintelligence.com/what-is/cve-2020-0986): Microsoft Windows Kernel Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 16%, known exploited since 3 November 2021. - [CVE-2020-0968](https://www.precursorintelligence.com/what-is/cve-2020-0968): Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability. High, CVSS 7.5, chance of use in 30 days 31%, known exploited since 3 November 2021. - [CVE-2020-0938](https://www.precursorintelligence.com/what-is/cve-2020-0938): Microsoft Windows Adobe Font Manager Library Remote Code Execution Vulnerability. High, CVSS 7.8, chance of use in 30 days 69%, known exploited since 3 November 2021. - [CVE-2020-0878](https://www.precursorintelligence.com/what-is/cve-2020-0878): Microsoft Edge and Internet Explorer Memory Corruption Vulnerability. Medium, CVSS 4.2, chance of use in 30 days 2.7%, known exploited since 3 November 2021. - [CVE-2020-0683](https://www.precursorintelligence.com/what-is/cve-2020-0683): Microsoft Windows Installer Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 7.6%, known exploited since 3 November 2021. - [CVE-2020-0674](https://www.precursorintelligence.com/what-is/cve-2020-0674): Microsoft Internet Explorer Scripting Engine Memory Corruption Vulnerability. High, CVSS 7.5, chance of use in 30 days 87%, known exploited since 3 November 2021. - [CVE-2021-1647](https://www.precursorintelligence.com/what-is/cve-2021-1647): Microsoft Defender Remote Code Execution Vulnerability. High, CVSS 7.8, chance of use in 30 days 39%, known exploited since 3 November 2021. - [CVE-2020-1464](https://www.precursorintelligence.com/what-is/cve-2020-1464): Microsoft Windows Spoofing Vulnerability. High, CVSS 7.8, chance of use in 30 days 39%, known exploited since 3 November 2021. - [CVE-2021-1675](https://www.precursorintelligence.com/what-is/cve-2021-1675): Microsoft Windows Print Spooler Remote Code Execution Vulnerability. High, CVSS 7.8, chance of use in 30 days 85%, known exploited since 3 November 2021. - [CVE-2021-1732](https://www.precursorintelligence.com/what-is/cve-2021-1732): Microsoft Win32k Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 78%, known exploited since 3 November 2021. - [CVE-2021-26411](https://www.precursorintelligence.com/what-is/cve-2021-26411): Microsoft Internet Explorer Memory Corruption Vulnerability. High, CVSS 8.8, chance of use in 30 days 81%, known exploited since 3 November 2021. - [CVE-2021-27085](https://www.precursorintelligence.com/what-is/cve-2021-27085): Microsoft Internet Explorer Remote Code Execution Vulnerability. High, CVSS 8.8, chance of use in 30 days 5.4%, known exploited since 3 November 2021. ## Which Windows 10 1909 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): - [CVE-2020-0796](https://www.precursorintelligence.com/what-is/cve-2020-0796): >99%, Critical (CVSS 10.0), known exploited - [CVE-2021-40444](https://www.precursorintelligence.com/what-is/cve-2021-40444): 98%, High (CVSS 8.8), known exploited - [CVE-2020-0601](https://www.precursorintelligence.com/what-is/cve-2020-0601): 89%, High (CVSS 8.1), known exploited - [CVE-2021-1675](https://www.precursorintelligence.com/what-is/cve-2021-1675): 85%, High (CVSS 7.8), known exploited - [CVE-2022-26923](https://www.precursorintelligence.com/what-is/cve-2022-26923): 84%, High (CVSS 8.8), known exploited - [CVE-2021-31955](https://www.precursorintelligence.com/what-is/cve-2021-31955): 81%, Medium (CVSS 5.5), known exploited - [CVE-2021-26411](https://www.precursorintelligence.com/what-is/cve-2021-26411): 81%, High (CVSS 8.8), known exploited - [CVE-2021-1732](https://www.precursorintelligence.com/what-is/cve-2021-1732): 78%, High (CVSS 7.8), known exploited - [CVE-2021-40449](https://www.precursorintelligence.com/what-is/cve-2021-40449): 74%, High (CVSS 7.8), known exploited ## Questions ### How many vulnerabilities does Windows 10 1909 have? We track 58 published vulnerabilities listed under the name Windows 10 1909, across 58 versions. The most recent Windows 10 1909 flaw added to the known-exploited list is CVE-2022-21971, on 18 August 2022. ### Which Windows 10 1909 vulnerabilities are being exploited? 50 are on the list of flaws known to be exploited. The most recently added are CVE-2022-21971, CVE-2022-26923 and CVE-2022-26925. ### Which versions of Windows 10 1909 do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2022-21971, affects before 10.0.18363.2094. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Windows 10 1909? Create a Precursor Intelligence account and track Windows 10 1909. 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. ## Running Windows 10 1909? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact