Name: CVE-2026-50522: Deserialization of Untrusted Data
Creator: Rapid7
Published: 2026-07-14T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-50522, CWE-502, Exploited in the Wild, CISA KEV Exploit, CVSS 9.8, EPSS 0.03042, CISA KEV

Emergent ThreatCVE-2026-58644:Microsoft SharePoint Server Unauthenticated Remote Code Execution Vulnerability Exploited in the WildBlog ↗

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

CVSS Details

CVSS 3.1 Base Score: 9.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Microsoft Sharepoint	—	Upgrade to the latest version of Microsoft SharePoint Subscription EditionUpgrade to the latest version of Microsoft SharePoint 2019Upgrade to the latest version of Microsoft SharePoint 2016	Jul 14, 2026	Jul 14, 2026

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CVSS Details

Covered by Rapid7

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