CVE Watch—

CVE-2026-20963

Microsoft SharePoint Deserialization of Untrusted Data Vulnerability

CVSS

—

Sin CVSS

EPSS

29.4%

p98

KEV

SÍ

18 mar 2026

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

29.4%EPSS · 30 días31.1%

2026-06-302026-07-16

Ficha del catálogo KEV

Producto

Microsoft / SharePoint

Vulnerabilidad

Microsoft SharePoint Deserialization of Untrusted Data Vulnerability

Añadido a KEV

18 mar 2026

Remediar antes de

21 mar 2026

Uso conocido en ransomware

Descripción resumida

Microsoft SharePoint contains a deserialization of untrusted data vulnerability that allows an unauthorized attacker to execute code over a network.

Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notas

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20963 ; https://nvd.nist.gov/vuln/detail/CVE-2026-20963

CVEs relacionados

CVECVSSEPSSKEVRExplotTítuloVis.

CVE-2025-49706—

100.0%

KEV—80Microsoft SharePoint Improper Authentication Vulnerability—CVE-2025-49704—

100.0%

KEV—80Microsoft SharePoint Code Injection Vulnerability—CVE-2025-53770—

100.0%

KEV—80Microsoft SharePoint Deserialization of Untrusted Data Vulnerability—CVE-2019-0604—

100.0%

KEV—80Microsoft SharePoint Remote Code Execution Vulnerability—CVE-2024-38094—

98.7%

KEV—80Microsoft SharePoint Deserialization Vulnerability—