CVE-2021-42321 is a high severity vulnerability with a CVSS score of 8.8. Exploits are available; patches have been released and should be applied urgently. This is classified as a zero-day vulnerability.
Very high probability of exploitation in the next 30 days
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
An authenticated attacker could leverage improper validation in cmdlet arguments within Microsoft Exchange and perform remote code execution.
| Vendor | Product |
|---|---|
| Microsoft | Exchange Server |
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