Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HMicrosoft SharePoint Server
APPMicrosoft20162019< 16.0.19725.20434
CISA KEV — detailsi
- Vendori
- Microsoft ↗
- Producti
- SharePoint
- Added to KEVi
- July 22, 2026
- Remediation deadline (US Federal)i
- July 25, 2026(overdue)
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Microsoft SharePoint contains a deserialization of untrusted data vulnerability which could allow an unauthorized attacker to execute code over a network.
Related vulnerabilities
Obejście uwierzytelnienia w Microsoft SharePoint Server (RCE-ready)
Zdalne wykonanie kodu poprzez deserializację w Microsoft SharePoint Server
RCE przez deserializację niezaufanych danych w Microsoft SharePoint Server
RCE przez deserialization w Microsoft SharePoint Server (on-premises)
Microsoft SharePoint Server – privilege escalation bez uwierzytelnienia