Live › vulnerability › CVE-2026-20963
Go to dashboardMicrosoft SharePoint has a deserialization of untrusted data flaw that lets an unauthenticated attacker run code over the network. CISA lists it as actively exploited in the wild.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft SharePoint | vendor | – | – |
| microsoft sharepoint server | vendor | < 16.0.19127.20442 | 16.0.19127.20442 |
| microsoft sharepoint server | vendor | = 2016 | – |
| microsoft sharepoint server | vendor | = 2019 | – |
Unknown from the sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
This page as .md · .json · in your agent: get_signal("CVE-2026-20963")
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