# SharePoint Server vulnerabilities > SharePoint Server is made by Microsoft. We track 448 published vulnerabilities listed under that exact name, across 23 versions. 17 of them are on the list of flaws known to be exploited, the newest added on 18 August 2026. Microsoft lists newer releases under their own names, such as Sharepoint Server Client Components SDK, so check those pages too. Canonical page: https://www.precursorintelligence.com/product/microsoft/sharepoint_server ## At a glance - **Made by:** [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) - **Published vulnerabilities:** 448 - **Known to be exploited:** 17 (listed under the name SharePoint Server) - **Versions tracked:** 23 - **Most recently added to the known-exploited list:** [CVE-2026-55040](https://www.precursorintelligence.com/what-is/cve-2026-55040), 18 August 2026. We keep watching the list. ## Is SharePoint Server listed under other names? Microsoft also lists SharePoint Server under more specific names, such as Sharepoint Server Client Components SDK and Sharepoint Server 2010. Flaws listed only under those names are counted on their own pages, not here. - [Sharepoint Server Client Components SDK](https://www.precursorintelligence.com/product/microsoft/sharepoint_server_client_components_sdk): 2 published vulnerabilities - [Sharepoint Server 2010](https://www.precursorintelligence.com/product/microsoft/sharepoint_server_2010): 1 published vulnerability ## Which versions of SharePoint Server do the exploited flaws hit? Each exploited flaw lists the versions it affects, as published. "before 16.0.19725.20434" means every version up to, but not including, 16.0.19725.20434. - [CVE-2026-55040](https://www.precursorintelligence.com/what-is/cve-2026-55040) (Microsoft SharePoint Weak Authentication Vulnerability): before 16.0.19725.20434, 2016, 2019 - [CVE-2026-50522](https://www.precursorintelligence.com/what-is/cve-2026-50522) (Microsoft SharePoint Deserialization of Untrusted Data Vulnerability): before 16.0.19725.20434, 2016, 2019 - [CVE-2026-58644](https://www.precursorintelligence.com/what-is/cve-2026-58644) (Microsoft SharePoint Deserialization of Untrusted Data Vulnerability): before 16.0.19725.20434, 2016, 2019 - [CVE-2026-56164](https://www.precursorintelligence.com/what-is/cve-2026-56164) (Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability): before 16.0.19725.20434, 2016, 2019 - [CVE-2025-49704](https://www.precursorintelligence.com/what-is/cve-2025-49704) (Microsoft SharePoint Code Injection Vulnerability): 2016, 2019 - [CVE-2025-49706](https://www.precursorintelligence.com/what-is/cve-2025-49706) (Microsoft SharePoint Improper Authentication Vulnerability): before 16.0.18526.20424, 2019 - [CVE-2025-53770](https://www.precursorintelligence.com/what-is/cve-2025-53770) (Microsoft SharePoint Deserialization of Untrusted Data Vulnerability): before 16.0.18526.20508, 2016, 2019 - [CVE-2024-38094](https://www.precursorintelligence.com/what-is/cve-2024-38094) (Microsoft SharePoint Deserialization Vulnerability): 2016, 2019 - [CVE-2023-24955](https://www.precursorintelligence.com/what-is/cve-2023-24955) (Microsoft SharePoint Server Code Injection Vulnerability): 2019 - [CVE-2023-29357](https://www.precursorintelligence.com/what-is/cve-2023-29357) (Microsoft SharePoint Server Privilege Escalation Vulnerability): 2019 - [CVE-2012-1889](https://www.precursorintelligence.com/what-is/cve-2012-1889) (Microsoft XML Core Services Memory Corruption Vulnerability): 2007-sp2, 2007-sp3 - [CVE-2012-2539](https://www.precursorintelligence.com/what-is/cve-2012-2539) (Microsoft Word Remote Code Execution Vulnerability): 2010 - [CVE-2017-11826](https://www.precursorintelligence.com/what-is/cve-2017-11826) (Microsoft Office Remote Code Execution Vulnerability): 2010-sp2, 2013-sp1 - [CVE-2014-1761](https://www.precursorintelligence.com/what-is/cve-2014-1761) (Microsoft Word Memory Corruption Vulnerability): 2010-sp1, 2010-sp2, 2013 - [CVE-2019-0604](https://www.precursorintelligence.com/what-is/cve-2019-0604) (Microsoft SharePoint Remote Code Execution Vulnerability): 2010-sp2, 2019 - [CVE-2015-1641](https://www.precursorintelligence.com/what-is/cve-2015-1641) (Microsoft Office Memory Corruption Vulnerability): 2010-sp2, 2013-sp1 - [CVE-2020-1147](https://www.precursorintelligence.com/what-is/cve-2020-1147) (Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability): 2010-sp2, 2019 ## Which SharePoint Server vulnerabilities are being exploited? 17 flaws are on the government list of vulnerabilities known to be exploited, newest first: - [CVE-2026-55040](https://www.precursorintelligence.com/what-is/cve-2026-55040): Microsoft SharePoint Weak Authentication Vulnerability. Critical, CVSS 9.1, chance of use in 30 days 70%, known exploited since 18 August 2026. - [CVE-2026-50522](https://www.precursorintelligence.com/what-is/cve-2026-50522): Microsoft SharePoint Deserialization of Untrusted Data Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 3.0%, known exploited since 22 July 2026. - [CVE-2026-58644](https://www.precursorintelligence.com/what-is/cve-2026-58644): Microsoft SharePoint Deserialization of Untrusted Data Vulnerability. Critical, CVSS 9.8, chance of use in 30 days 16%, known exploited since 16 July 2026. - [CVE-2026-56164](https://www.precursorintelligence.com/what-is/cve-2026-56164): Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability. Medium, CVSS 5.3, chance of use in 30 days 1.0%, known exploited since 14 July 2026. - [CVE-2025-49704](https://www.precursorintelligence.com/what-is/cve-2025-49704): Microsoft SharePoint Code Injection Vulnerability. High, CVSS 8.8, chance of use in 30 days >99%, known exploited since 22 July 2025. - [CVE-2025-49706](https://www.precursorintelligence.com/what-is/cve-2025-49706): Microsoft SharePoint Improper Authentication Vulnerability. Medium, CVSS 6.5, chance of use in 30 days >99%, known exploited since 22 July 2025. - [CVE-2025-53770](https://www.precursorintelligence.com/what-is/cve-2025-53770): Microsoft SharePoint Deserialization of Untrusted Data Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 20 July 2025. - [CVE-2024-38094](https://www.precursorintelligence.com/what-is/cve-2024-38094): Microsoft SharePoint Deserialization Vulnerability. High, CVSS 7.2, chance of use in 30 days 51%, known exploited since 22 October 2024. - [CVE-2023-24955](https://www.precursorintelligence.com/what-is/cve-2023-24955): Microsoft SharePoint Server Code Injection Vulnerability. High, CVSS 7.2, chance of use in 30 days 85%, known exploited since 26 March 2024. - [CVE-2023-29357](https://www.precursorintelligence.com/what-is/cve-2023-29357): Microsoft SharePoint Server Privilege Escalation Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 10 January 2024. - [CVE-2012-1889](https://www.precursorintelligence.com/what-is/cve-2012-1889): Microsoft XML Core Services Memory Corruption Vulnerability. High, CVSS 8.8, chance of use in 30 days 84%, known exploited since 8 June 2022. - [CVE-2012-2539](https://www.precursorintelligence.com/what-is/cve-2012-2539): Microsoft Word Remote Code Execution Vulnerability. High, CVSS 7.8, chance of use in 30 days 53%, known exploited since 28 March 2022. - [CVE-2017-11826](https://www.precursorintelligence.com/what-is/cve-2017-11826): Microsoft Office Remote Code Execution Vulnerability. High, CVSS 7.8, chance of use in 30 days 81%, known exploited since 3 March 2022. - [CVE-2014-1761](https://www.precursorintelligence.com/what-is/cve-2014-1761): Microsoft Word Memory Corruption Vulnerability. High, CVSS 7.8, chance of use in 30 days 78%, known exploited since 15 February 2022. - [CVE-2019-0604](https://www.precursorintelligence.com/what-is/cve-2019-0604): Microsoft SharePoint Remote Code Execution Vulnerability. Critical, CVSS 9.8, chance of use in 30 days >99%, known exploited since 3 November 2021. - [CVE-2015-1641](https://www.precursorintelligence.com/what-is/cve-2015-1641): Microsoft Office Memory Corruption Vulnerability. High, CVSS 7.8, chance of use in 30 days 97%, 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 SharePoint Server 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-2025-53770](https://www.precursorintelligence.com/what-is/cve-2025-53770): >99%, Critical (CVSS 9.8), known exploited - [CVE-2025-49704](https://www.precursorintelligence.com/what-is/cve-2025-49704): >99%, High (CVSS 8.8), known exploited - [CVE-2023-29357](https://www.precursorintelligence.com/what-is/cve-2023-29357): >99%, Critical (CVSS 9.8), known exploited - [CVE-2019-0604](https://www.precursorintelligence.com/what-is/cve-2019-0604): >99%, Critical (CVSS 9.8), known exploited - [CVE-2025-53771](https://www.precursorintelligence.com/what-is/cve-2025-53771): >99%, Medium (CVSS 6.5) - [CVE-2025-49706](https://www.precursorintelligence.com/what-is/cve-2025-49706): >99%, Medium (CVSS 6.5), known exploited - [CVE-2010-3964](https://www.precursorintelligence.com/what-is/cve-2010-3964): 94%, High (CVSS 7.5) - [CVE-2020-1147](https://www.precursorintelligence.com/what-is/cve-2020-1147): 94%, High (CVSS 7.8), known exploited - [CVE-2023-24955](https://www.precursorintelligence.com/what-is/cve-2023-24955): 85%, High (CVSS 7.2), known exploited ## Questions ### How many vulnerabilities does SharePoint Server have? We track 448 published vulnerabilities listed under the name SharePoint Server, across 23 versions. The most recent SharePoint Server flaw added to the known-exploited list is CVE-2026-55040, on 18 August 2026. ### Which SharePoint Server vulnerabilities are being exploited? 17 are on the list of flaws known to be exploited. The most recently added are CVE-2026-55040, CVE-2026-50522 and CVE-2026-58644. ### Why are newer SharePoint Server flaws missing from this page? Microsoft also lists SharePoint Server under more specific names, such as Sharepoint Server Client Components SDK and Sharepoint Server 2010. 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 SharePoint Server do the exploited flaws affect? Each flaw names its own versions, usually as ranges. The newest, CVE-2026-55040, affects before 16.0.19725.20434, 2016, 2019. The versions for every exploited flaw are listed on this page. ### How do I get alerts for SharePoint Server? Create a Precursor Intelligence account and track SharePoint Server. 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 SharePoint Server? 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. 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