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Vulnerabilities CVE-2021-34473

CVE-2021-34473

Critical
Open
KEV
TLP:CLEAR

Microsoft Exchange Server Remote Code Execution Vulnerability

NVD CVE.org

AI Analysis

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Description

Microsoft — Exchange Server — Microsoft Exchange Server contains an unspecified vulnerability that allows for remote code execution.

Details

CVSS Score
9.1
EPSS Score ⓘ
100.00%

100th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C
Confidence
100%
Published
Jul 14, 2021
Last Modified
Aug 10, 2026
CISA KEV
Date Added
Nov 3, 2021
Patch Due
Nov 17, 2021
Used in ransomware campaigns
Required Action
Apply updates per vendor instructions.
Notes
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