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CVE-2026-50522: Microsoft SharePoint

EPSS3.0%No. 1517 of 1739 in KEV
CVE year2026listed the same year
Same vendor in KEV389
Same product10
FieldValue
VendorMicrosoft
ProductSharePoint
NameMicrosoft SharePoint Deserialization of Untrusted Data Vulnerability
Added to KEV2026-07-22
US federal due date2026-07-25
Ransomware useUnknown
CWECWE-502

CISA description

Microsoft SharePoint contains a deserialization of untrusted data vulnerability which could allow an unauthorized attacker to execute code over a network.

Other entries for this product

CVEVendor / productAddedEPSSRansomware
CVE-2026-65660Microsoft SharePoint2026-09-252.1%Unknown
CVE-2026-55040Microsoft SharePoint2026-08-1869.5%Unknown
CVE-2026-58644Microsoft SharePoint2026-07-1615.8%Unknown
CVE-2026-20963Microsoft SharePoint2026-03-1829.5%Unknown
CVE-2025-49706Microsoft SharePoint2025-07-2299.0%Known
CVE-2025-49704Microsoft SharePoint2025-07-2299.9%Known
CVE-2025-53770Microsoft SharePoint2025-07-2099.9%Known
CVE-2024-38094Microsoft SharePoint2024-10-2250.8%Known
CVE-2019-0604Microsoft SharePoint2021-11-0399.9%Known

NVD — CVE-2026-50522

Data from CISA's Known Exploited Vulnerabilities (KEV) catalog. EPSS is FIRST's estimated probability of exploitation activity in the next 30 days, refreshed weekly. Always follow the vendor's official guidance.
About this page

A Microsoft SharePoint vulnerability added to CISA's Known Exploited Vulnerabilities catalog on 2026-07-22.