SharePoint Server vulnerabilitiesAnd the versions its exploited flaws hit.
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.
The most recent SharePoint Server flaw added to the known-exploited list is CVE-2026-55040, on 18 August 2026. We keep watching the known-exploited list.
Is SharePoint Server listed under other names? Yes.
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. If you run one of these, open its page for its own exploited flaws.
Which versions of SharePoint Server do the exploited flaws hit?
Each exploited flaw lists the versions it affects, usually as ranges. "before 16.0.19725.20434" means every version up to, but not including, 16.0.19725.20434. Find your version, then patch.
- CVE-2026-55040Exploited list, 18 Aug 2026
Microsoft SharePoint Weak Authentication Vulnerability
before 16.0.19725.2043420162019 - CVE-2026-50522Exploited list, 22 Jul 2026
Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
before 16.0.19725.2043420162019 - CVE-2026-58644Exploited list, 16 Jul 2026
Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
before 16.0.19725.2043420162019 - CVE-2026-56164Exploited list, 14 Jul 2026
Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability
before 16.0.19725.2043420162019 - CVE-2025-49704Exploited list, 22 Jul 2025
Microsoft SharePoint Code Injection Vulnerability
20162019 - CVE-2025-49706Exploited list, 22 Jul 2025
Microsoft SharePoint Improper Authentication Vulnerability
before 16.0.18526.204242019 - CVE-2025-53770Exploited list, 20 Jul 2025
Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
before 16.0.18526.2050820162019 - CVE-2024-38094Exploited list, 22 Oct 2024
Microsoft SharePoint Deserialization Vulnerability
20162019 - CVE-2023-24955Exploited list, 26 Mar 2024
Microsoft SharePoint Server Code Injection Vulnerability
2019 - CVE-2023-29357Exploited list, 10 Jan 2024
Microsoft SharePoint Server Privilege Escalation Vulnerability
2019 - CVE-2012-1889Exploited list, 8 Jun 2022
Microsoft XML Core Services Memory Corruption Vulnerability
2007-sp22007-sp3 - CVE-2012-2539Exploited list, 28 Mar 2022
Microsoft Word Remote Code Execution Vulnerability
2010 - CVE-2017-11826Exploited list, 3 Mar 2022
Microsoft Office Remote Code Execution Vulnerability
2010-sp22013-sp1 - CVE-2014-1761Exploited list, 15 Feb 2022
Microsoft Word Memory Corruption Vulnerability
2010-sp12010-sp22013 - CVE-2019-0604Exploited list, 3 Nov 2021
Microsoft SharePoint Remote Code Execution Vulnerability
2010-sp22019 - CVE-2015-1641Exploited list, 3 Nov 2021
Microsoft Office Memory Corruption Vulnerability
2010-sp22013-sp1 - CVE-2020-1147Exploited list, 3 Nov 2021
Microsoft .NET Framework, SharePoint, and Visual Studio Remote Code Execution Vulnerability
2010-sp22019
Which SharePoint Server vulnerabilities are being exploited?
17 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.
- 9.1Microsoft SharePoint Weak Authentication Vulnerability
Microsoft SharePoint contains a weak authentication vulnerability which allows an unauthorized attacker to bypass a security feature over a network.
- 9.8Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
Microsoft SharePoint contains a deserialization of untrusted data vulnerability which could allow an unauthorized attacker to execute code over a network.
- 9.8Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.
- 5.3Microsoft SharePoint Server Missing Authentication for Critical Function Vulnerability
Microsoft SharePoint contains a missing authentication for critical function vulnerability that allows an unauthorized attacker to elevate privileges over a network.
- 8.8Microsoft SharePoint Code Injection Vulnerability
Microsoft SharePoint contains a code injection vulnerability that could allow an authorized attacker to execute code over a network.
- 6.5Microsoft SharePoint Improper Authentication Vulnerability
Microsoft SharePoint contains an improper authentication vulnerability that allows an authorized attacker to perform spoofing over a network.
- 9.8Microsoft SharePoint Deserialization of Untrusted Data Vulnerability
Microsoft SharePoint Server on-premises contains a deserialization of untrusted data vulnerability that could allow an unauthorized attacker to execute code over a network.
- 7.2Microsoft SharePoint Deserialization Vulnerability
Microsoft SharePoint contains a deserialization vulnerability that allows for remote code execution.
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. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.
- >99%
Deserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network.
- >99%
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- >99%
Microsoft SharePoint Server Elevation of Privilege Vulnerability
- >99%
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package, aka 'Microsoft SharePoint Remote Code Execution Vulnerability'.
- >99%CVE-2025-53771Medium
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- >99%
Improper authentication in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
- 94%CVE-2010-3964High
Unrestricted file upload vulnerability in the Document Conversions Launcher Service in Microsoft Office SharePoint Server 2007 SP2, when the Document Conversions Load Balancer Service is enabled, allows remote...
- 94%
A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server,...
- 85%
Microsoft SharePoint Server Remote Code Execution Vulnerability
Running SharePoint Server? We'll keep checking.
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1 flaw being exploited affects software Acme tracks
Microsoft SharePoint contains a weak authentication vulnerability which allows an unauthorized attacker to bypass a security feature over a network.
- Matched to
- SharePoint Server 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 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.
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.
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.
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.
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.