CVE-2021-42321
Microsoft Exchange Server Remote Code Execution Vulnerability
- State
- Published
- Severity
- 8.8 High
- Published
- Nov 10, 2021
- Updated
- Aug 19, 2026
- Reserved
- Oct 12, 2021
Description
Microsoft Exchange Server Remote Code Execution Vulnerability
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C | microsoft |
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
Microsoft Exchange Server 2016 Cumulative Update 21Microsoft |
|
Microsoft Exchange Server 2016 Cumulative Update 22Microsoft |
|
Microsoft Exchange Server 2019 Cumulative Update 10Microsoft |
|
Microsoft Exchange Server 2019 Cumulative Update 11Microsoft |
|
References
- Microsoft Exchange Server Remote Code Execution Vulnerabilityvendor-advisorypatch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42321
- http://packetstormsecurity.com/files/166153/Microsoft-Exchange-Server-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/168131/Microsoft-Exchange-Server-ChainedSerializationBinder-Remote-Code-Execution.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42321government-resource
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