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Microsoft update

KB5002863

Security Update

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Fixed in

Fixes 9 records

Priority CRITICAL 97KEV

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

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.80242 Published 2026-05-22 Fixed in 16.0.5552.1002, 16.0.10417.20128 +1 CWE-502
Priority MEDIUM 64

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

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.31124 Published 2026-05-12 Fixed in 16.0.5552.1002, 16.0.10417.20128 +1 CWE-502
Priority MEDIUM 44

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

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.02032 Published 2026-05-12 Fixed in 16.0.5552.1002, 16.0.10417.20128 +1 CWE-502
Priority MEDIUM 44

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

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.01967 Published 2026-05-12 Fixed in 16.0.5552.1002, 16.0.10417.20128 +1 CWE-502
Priority MEDIUM 43

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

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.01698 Published 2026-05-12 Fixed in 16.0.5552.1002, 16.0.10417.20128 +1 CWE-502
Priority MEDIUM 42

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

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.00961 Published 2026-05-12 Fixed in 16.0.5552.1002, 16.0.10417.20128 +1 CWE-1220
Priority MEDIUM 40

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

CVSS 3.1HIGH 8.0 Network Low privileges User interaction EPSS 0.01818 Published 2026-05-12 Fixed in 16.0.5552.1002, 16.0.10417.20128 +1 CWE-502
Priority LOW 39

Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVSS 3.1HIGH 8.4 Local No auth No interaction EPSS 0.00453 Published 2026-05-12 Fixed in https://aka.ms/OfficeSecurityReleases, 16.109.26051019 +4 CWE-822
Priority LOW 38

Improper neutralization of special elements used in an os command ('os command injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

CVSS 3.1HIGH 8.0 Network Low privileges User interaction EPSS 0.00609 Published 2026-06-01 Fixed in 16.0.5552.1002, 16.0.10417.20128 +1 CWE-78