CVE-2021-34478
high
Microsoft CVSS v3 Base Score
7.8
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score
54.4%
Exploitation probability in 30 days
Top 1% most likely to be exploited
Attack Characteristics
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Published: August 12, 2021 (1852 days ago)
Last Modified: August 10, 2026
Vendor: Microsoft
Source: NVD
Vulnerability Report
Generated by CyberWatcher
Description
Microsoft Office Remote Code Execution Vulnerability
CWE
NVD-CWE-noinfoAffected Products
microsoft 365 appsmicrosoft office