CVE-2021-42321 (GCVE-0-2021-42321)
Vulnerability from cvelistv5
Published
2021-11-10 00:47
Modified
2025-10-21 23:25
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Remote Code Execution
Summary
Microsoft Exchange Server Remote Code Execution Vulnerability
References
Impacted products
| Vendor | Product | Version | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ► | Microsoft | Microsoft Exchange Server 2016 Cumulative Update 21 |
Version: 15.01.0 < 15.01.2308.020 cpe:2.3:a:microsoft:exchange_server:2016:cumulative_update_21:*:*:*:*:*:* |
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|
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CISA Known exploited vulnerability
Data from the Known Exploited Vulnerabilities Catalog
Date added: 2021-11-17
Due date: 2021-12-01
Required action: Apply updates per vendor instructions.
Used in ransomware: Known
Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-42321
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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