CVE-2021-34520

HIGH

Microsoft SharePoint Server - Remote Code Execution via Untrusted Data Deserialization

Title source: llm
STIX 2.1

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

References (2)

Core 2
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://www.zerodayinitiative.com/advisories/ZDI-21-828/

Scores

CVSS v3 8.1
EPSS 0.0332
EPSS Percentile 87.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Details

CWE
CWE-502
Status published
Products (3)
microsoft/sharepoint_foundation 2013 sp1
microsoft/sharepoint_server 2016
microsoft/sharepoint_server 2019
Published Jul 14, 2021
Tracked Since Feb 18, 2026