H3XAOperational intelligence
Live analytical pictureEvidence before assessment
Threat intelligence / Vulnerability

CVE-2021-42321

An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.

Vulnerability
TypeVulnerability
External ID—
First seen2021-11-17
Last seen2021-11-17

Confidence

—

An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.

Labels

exploitedkevransomware

CISA KEV context

Vendor / productMicrosoft Exchange
Added2021-11-17
Due date2021-12-01
11 recorded

Relationships

mitigates
from Remediate CVE-2021-42321
Mitigation
related-to
to AJAX Footprinting
Technique
related-to
to Argument Injection
Technique
related-to
to Command Delimiters
Technique
related-to
to Double Encoding
Technique
related-to
to Exploiting Multiple Input Interpretation Layers
Technique
related-to
to Flash Injection
Technique
related-to
to Object Injection
Technique
related-to
to User-Controlled Filename
Technique
related-to
to Using Leading 'Ghost' Character Sequences to Bypass Input Filters
Technique
related-to
to Using Unicode Encoding to Bypass Validation Logic
Technique
3 external

References

nvd
CVE-2021-42321
open
cwe
CWE-184
open
cwe
CWE-502
open
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