CVE Watch—

CVE-2026-20963

Microsoft SharePoint Deserialization of Untrusted Data Vulnerability

CVSS

—

Sin CVSS

EPSS

31.6%

p98

KEV

SÍ

18 mar 2026

Exploit Today

0-100

Publicado: — · Última mod.: —

EPSS · 30d

29.5%EPSS · 30 días31.6%

2026-08-022026-08-31

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

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