CVE-2021-27065NVD

Vulnerability Summary

Microsoft Exchange Server Remote Code Execution Vulnerability

Severity Level

HIGH(7.8)

Published Date

Mar 3, 2021

Last Modified

Aug 19, 2026

Exploitation Status

ACTIVE

EPSS Score (30-Day)

99.88%Probability

Root Weakness (CWE)

CWE-22: Path Traversal ↗

The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory.

CVSS v3.1 Base Metrics

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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