CVE-2021-31198

HIGH

Microsoft Exchange Server - Remote Code Execution

Title source: llm
STIX 2.1

Description

Microsoft Exchange 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-21-894/

Scores

CVSS v3 7.8
EPSS 0.0487
EPSS Percentile 91.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-20 CWE-94
Status published
Products (3)
microsoft/exchange_server 2013 cumulative_update_23
microsoft/exchange_server 2016 cumulative_update_19 (2 CPE variants)
microsoft/exchange_server 2019 cumulative_update_8 (2 CPE variants)
Published May 11, 2021
Tracked Since Feb 18, 2026