cve detail

CVE-2026-20963

naam

Microsoft SharePoint Deserialization of Untrusted Data Vulnerability

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

KEV

bekend misbruikt

EPSS

4,9%

percentiel

90%

vendor

Microsoft

product

SharePoint

toegevoegd aan KEV

18 mrt 2026

due date

21 mrt 2026

ransomware

Unknown

CWE

CWE-502

EPSS datum

12 mei 2026

aanbevolen actie

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

notities

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