VIR Vulnerability Intelligence Relay

CVE-2021-42321

unknown KEV
Published 2021-11-17 · Modified 2021-11-17
CVSS v3
—
CVSS v2
—
VIR risk
1.5

Description

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

CISA KEV

Vendor
Microsoft
Product
Exchange
Due date
2021-12-01

Predictions

Exploit likelihood
99%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cisa-kev — https://nvd.nist.gov/vuln/detail/CVE-2021-42321

Exploits

References

Verify integrity in audit chain (admin only). AS-IS.