CVE-2026-105013

Microsoft Sharepoint Server: unsafe deserialisation

Risk score: 66/100
CVSS: 7.4 v3.1
Exploit chance (30 days): 0.8%
Published: 13 Oct 2026

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What to know

What it is: Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Affected: Microsoft Sharepoint Server
Fix: Apply the vendor's security update; see the linked advisory.
Exploitation: No known exploitation

Why it is Amber

CVSS 7.4 high
On your watchlist: sharepoint

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105013

Original description

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Last activity 13 Oct 2026. Patch Forecast updates every hour.