Description
Microsoft Exchange Server Security Feature Bypass Vulnerability
Published: 2021-05-11
Score: 6.6 Medium
EPSS: 94.0% High
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

No advisories yet.

History

Wed, 22 Oct 2025 00:15:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000


Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.94028}

epss

{'score': 0.94004}


Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.93866}

epss

{'score': 0.94028}


Tue, 04 Feb 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2021-11-03'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Subscriptions

Microsoft Exchange Server
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2025-10-21T23:25:45.697Z

Reserved: 2021-04-14T00:00:00.000Z

Link: CVE-2021-31207

cve-icon Vulnrichment

Updated: 2024-08-03T22:55:53.519Z

cve-icon NVD

Status : Analyzed

Published: 2021-05-11T19:15:10.397

Modified: 2025-10-30T19:40:19.047

Link: CVE-2021-31207

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses