# Windows 10 vulnerabilities > Windows 10 is made by Microsoft. We track 4,066 published vulnerabilities listed under that exact name, across 15 versions. 20 of them are on the list of flaws known to be exploited, the newest added on 6 October 2025. Microsoft lists newer releases under their own names, such as Windows 10 1809, so check those pages too. Canonical page: https://www.precursorintelligence.com/product/microsoft/windows_10 ## At a glance - **Made by:** [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) - **Published vulnerabilities:** 4,066 - **Known to be exploited:** 20 (listed under the name Windows 10) - **Versions tracked:** 15 - **Most recently added to the known-exploited list:** [CVE-2021-43226](https://www.precursorintelligence.com/what-is/cve-2021-43226), 6 October 2025. We keep watching the list. ## Is Windows 10 listed under other names? Microsoft also lists Windows 10 under more specific names, such as Windows 10 1809 and Windows 10 21H2. Flaws listed only under those names are counted on their own pages, not here. - [Windows 10 1809](https://www.precursorintelligence.com/product/microsoft/windows_10_1809): 1,465 published vulnerabilities - [Windows 10 21H2](https://www.precursorintelligence.com/product/microsoft/windows_10_21h2): 1,430 published vulnerabilities - [Windows 10 22H2](https://www.precursorintelligence.com/product/microsoft/windows_10_22h2): 1,425 published vulnerabilities - [Windows 10 1607](https://www.precursorintelligence.com/product/microsoft/windows_10_1607): 1,294 published vulnerabilities - [Windows 10 1507](https://www.precursorintelligence.com/product/microsoft/windows_10_1507): 1,131 published vulnerabilities - [Windows 10 20H2](https://www.precursorintelligence.com/product/microsoft/windows_10_20h2): 293 published vulnerabilities - [Windows 10 21H1](https://www.precursorintelligence.com/product/microsoft/windows_10_21h1): 89 published vulnerabilities - [Windows 10 1803](https://www.precursorintelligence.com/product/microsoft/windows_10_1803): 64 published vulnerabilities - [Windows 10 1709](https://www.precursorintelligence.com/product/microsoft/windows_10_1709): 58 published vulnerabilities - [Windows 10 1909](https://www.precursorintelligence.com/product/microsoft/windows_10_1909): 58 published vulnerabilities - [Windows 10 1703](https://www.precursorintelligence.com/product/microsoft/windows_10_1703): 47 published vulnerabilities - [Windows 10 1511](https://www.precursorintelligence.com/product/microsoft/windows_10_1511): 40 published vulnerabilities ## Which versions of Windows 10 do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. - [CVE-2021-43226](https://www.precursorintelligence.com/what-is/cve-2021-43226) (Microsoft Windows Privilege Escalation Vulnerability): 20h2, 21h1, 1607, 1809, 1909, 2004 - [CVE-2016-4171](https://www.precursorintelligence.com/what-is/cve-2016-4171) (Adobe Flash Player Remote Code Execution Vulnerability): all versions - [CVE-2016-7855](https://www.precursorintelligence.com/what-is/cve-2016-7855) (Adobe Flash Player Use-After-Free Vulnerability): 1511, 1607 - [CVE-2019-0803](https://www.precursorintelligence.com/what-is/cve-2019-0803) (Microsoft Win32k Privilege Escalation Vulnerability): 1607, 1703, 1709, 1803, 1809 - [CVE-2020-0646](https://www.precursorintelligence.com/what-is/cve-2020-0646) (Microsoft .NET Framework Remote Code Execution Vulnerability): 1607, 1709, 1803, 1809, 1903, 1909 - [CVE-2020-0878](https://www.precursorintelligence.com/what-is/cve-2020-0878) (Microsoft Edge and Internet Explorer Memory Corruption Vulnerability): 1909 - [CVE-2018-4878](https://www.precursorintelligence.com/what-is/cve-2018-4878) (Adobe Flash Player Use-After-Free Vulnerability): all versions - [CVE-2020-17087](https://www.precursorintelligence.com/what-is/cve-2020-17087) (Microsoft Windows Kernel Privilege Escalation Vulnerability): 20h2, 1607, 1803, 1809, 1903, 1909, 2004 - [CVE-2021-31956](https://www.precursorintelligence.com/what-is/cve-2021-31956) (Microsoft Windows NTFS Privilege Escalation Vulnerability): 1809 - [CVE-2021-31979](https://www.precursorintelligence.com/what-is/cve-2021-31979) (Microsoft Windows Kernel Privilege Escalation Vulnerability): 1809 - [CVE-2020-1147](https://www.precursorintelligence.com/what-is/cve-2020-1147) (Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability): 1607, 1709, 1803, 1809, 1903, 1909, 2004 9 more exploited flaws name Windows 10 without a version of its own (for example as the system other affected software runs on). They are in the list below. ## Which Windows 10 vulnerabilities are being exploited? 20 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2021-43226](https://www.precursorintelligence.com/what-is/cve-2021-43226): Microsoft Windows Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 3.3%, known exploited since 6 October 2025. - [CVE-2016-0984](https://www.precursorintelligence.com/what-is/cve-2016-0984): Adobe Flash Player and AIR Use-After-Free Vulnerability. High, CVSS 8.8, chance of use in 30 days 55%, known exploited since 25 May 2022. - [CVE-2016-1010](https://www.precursorintelligence.com/what-is/cve-2016-1010): Adobe Flash Player and AIR Integer Overflow Vulnerability. High, CVSS 8.8, chance of use in 30 days 19%, known exploited since 25 May 2022. - [CVE-2015-1769](https://www.precursorintelligence.com/what-is/cve-2015-1769): Microsoft Windows Mount Manager Privilege Escalation Vulnerability. Medium, CVSS 6.6, chance of use in 30 days 4.1%, known exploited since 25 May 2022. - [CVE-2018-5002](https://www.precursorintelligence.com/what-is/cve-2018-5002): Adobe Flash Player Stack-based Buffer Overflow Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 25%, known exploited since 23 May 2022. - [CVE-2015-2426](https://www.precursorintelligence.com/what-is/cve-2015-2426): Microsoft Windows Adobe Type Manager Library Remote Code Execution Vulnerability. High, CVSS 8.8, chance of use in 30 days 87%, known exploited since 28 March 2022. - [CVE-2016-4171](https://www.precursorintelligence.com/what-is/cve-2016-4171): Adobe Flash Player Remote Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 20%, known exploited since 25 March 2022. - [CVE-2016-7892](https://www.precursorintelligence.com/what-is/cve-2016-7892): Adobe Flash Player Use-After-Free Vulnerability. High, CVSS 8.8, chance of use in 30 days 19%, known exploited since 25 March 2022. - [CVE-2016-1019](https://www.precursorintelligence.com/what-is/cve-2016-1019): Adobe Flash Player Arbitrary Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 22%, known exploited since 3 March 2022. - [CVE-2016-7855](https://www.precursorintelligence.com/what-is/cve-2016-7855): Adobe Flash Player Use-After-Free Vulnerability. High, CVSS 8.8, chance of use in 30 days 25%, known exploited since 3 March 2022. - [CVE-2017-11292](https://www.precursorintelligence.com/what-is/cve-2017-11292): Adobe Flash Player Type Confusion Vulnerability. High, CVSS 8.8, chance of use in 30 days 12%, known exploited since 3 March 2022. - [CVE-2018-15982](https://www.precursorintelligence.com/what-is/cve-2018-15982): Adobe Flash Player Use-After-Free Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 90%, known exploited since 15 February 2022. - [CVE-2019-0803](https://www.precursorintelligence.com/what-is/cve-2019-0803): Microsoft Win32k Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 45%, known exploited since 3 November 2021. - [CVE-2020-0646](https://www.precursorintelligence.com/what-is/cve-2020-0646): Microsoft .NET Framework Remote Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, 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-2018-4878](https://www.precursorintelligence.com/what-is/cve-2018-4878): Adobe Flash Player Use-After-Free Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 90%, known exploited since 3 November 2021. - [CVE-2020-17087](https://www.precursorintelligence.com/what-is/cve-2020-17087): Microsoft Windows Kernel Privilege Escalation Vulnerability. High, CVSS 7.8, chance of use in 30 days 5.4%, 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-2020-1147](https://www.precursorintelligence.com/what-is/cve-2020-1147): Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability. High, CVSS 7.8, chance of use in 30 days 94%, known exploited since 3 November 2021. ## Which Windows 10 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-2015-2426](https://www.precursorintelligence.com/what-is/cve-2015-2426): 87%, High (CVSS 8.8), known exploited - [CVE-2015-6132](https://www.precursorintelligence.com/what-is/cve-2015-6132): 85%, High (CVSS 7.2) - [CVE-2017-0038](https://www.precursorintelligence.com/what-is/cve-2017-0038): 82%, Medium (CVSS 5.5) - [CVE-2017-0290](https://www.precursorintelligence.com/what-is/cve-2017-0290): 81%, High (CVSS 7.8) - [CVE-2017-0070](https://www.precursorintelligence.com/what-is/cve-2017-0070): 79%, High (CVSS 7.5) - [CVE-2016-3236](https://www.precursorintelligence.com/what-is/cve-2016-3236): 77%, Critical (CVSS 9.8) - [CVE-2017-8729](https://www.precursorintelligence.com/what-is/cve-2017-8729): 72%, High (CVSS 7.5) - [CVE-2017-8740](https://www.precursorintelligence.com/what-is/cve-2017-8740): 72%, High (CVSS 7.5) - [CVE-2017-8636](https://www.precursorintelligence.com/what-is/cve-2017-8636): 72%, High (CVSS 7.5) ## Questions ### How many vulnerabilities does Windows 10 have? We track 4,066 published vulnerabilities listed under the name Windows 10, across 15 versions. The most recent Windows 10 flaw added to the known-exploited list is CVE-2021-43226, on 6 October 2025. ### Which Windows 10 vulnerabilities are being exploited? 20 are on the list of flaws known to be exploited. The most recently added are CVE-2021-43226, CVE-2016-0984 and CVE-2016-1010. ### Why are newer Windows 10 flaws missing from this page? Microsoft also lists Windows 10 under more specific names, such as Windows 10 1809 and Windows 10 21H2. Flaws listed only under those names are counted on their own pages, not here. Open the release you run to see its own list. ### Which versions of Windows 10 do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2021-43226, affects 20h2, 21h1, 1607, 1809 and more. The versions for every exploited flaw are listed on this page. ### How do I get alerts for Windows 10? Create a Precursor Intelligence account and track Windows 10. 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? 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