CVE-2021-34520

HIGH

Microsoft Sharepoint Foundation - Insecure Deserialization

Title source: rule

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

References (2)

Scores

CVSS v3 8.1
EPSS 0.0494
EPSS Percentile 89.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Classification

CWE
CWE-502
Status published

Affected Products (3)

microsoft/sharepoint_foundation
microsoft/sharepoint_server
microsoft/sharepoint_server

Timeline

Published Jul 14, 2021
Tracked Since Feb 18, 2026