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Description of the security update for SharePoint Server Subscription Edition: January 13, 2026 (KB5002822)

🗓️ 13 Jan 2026 16:00:00Reported by MicrosoftType 
mskb
 mskb🔗 support.microsoft.com👁 23 Views

SharePoint Server Subscription Edition security update KB5002822 fixes CVEs; install Workflow Manager KB5002799 first and enable Classic Workflow Manager debug flag; adds Version 25H2.

Related
ReporterTitlePublishedViews
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ATTACKERKB		CVE-2026-20943
13 Jan 202617:56
–attackerkb
Information Security Automation		April "In the Trend of VM" (#26): one Microsoft SharePoint vulnerability
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Information Security Automation		About Remote Code Execution - Microsoft SharePoint (CVE-2026-20963) vulnerability
3 Apr 202617:00
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BDU FSTEC		The vulnerability of the Microsoft SharePoint Server software, related to insufficient validation of input data, allows a hacker to execute arbitrary code.
14 Jan 202600:00
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BDU FSTEC		The vulnerability of the Microsoft SharePoint Server software lies in the lack of protective measures for the SQL query structure, allowing attackers to execute arbitrary code.
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BDU FSTEC		The vulnerability of Microsoft SharePoint Server, Microsoft SharePoint Server Subscription Edition, and Microsoft SharePoint Enterprise Server lies in the insufficient validation of requests on the server side, allowing attackers to disclose sensitive information.
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–bdu_fstec
BDU FSTEC		The vulnerability of the Click-to-Run package services for Microsoft Office and Microsoft SharePoint Server allows a hacker to enhance their privileges.
15 Jan 202600:00
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BDU FSTEC		The vulnerability of Microsoft SharePoint Server and SharePoint Enterprise Server’s software packages, related to deserialization mechanism flaws, allows attackers to execute arbitrary code.
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BDU FSTEC		The vulnerability of Microsoft SharePoint Server and Microsoft SharePoint Enterprise Server packages lies in insufficient data validation, which allows attackers to perform cross-site scripting attacks.
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Circl		CVE-2026-20943
13 Jan 202618:01
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13 Jan 2026 16:00Current
7High risk
Vulners AI Score7
CVSS 3.15.4 - 9.8
EPSS0.2943
SSVC
SharePoint ServerSubscription EditionSecurity updateWorkflow ManagerDebug flagVersion twenty five
23