CVE-2021-28481
Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-28481 is fixed in 5 products on 1 platform, first by KB5001779, released April 13, 2021. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.
Urgent
CVSS
9.8
Critical
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.3624
98th percentile
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Microsoft Exchange Server 2013 Cumulative Update 23 | KB5001779 | Apr 13, 2021 | |
| Microsoft Exchange Server 2016 Cumulative Update 19 | KB5001779 | Apr 13, 2021 | |
| Microsoft Exchange Server 2016 Cumulative Update 20 | KB5001779 | Apr 13, 2021 | |
| Microsoft Exchange Server 2019 Cumulative Update 8 | KB5001779 | Apr 13, 2021 | |
| Microsoft Exchange Server 2019 Cumulative Update 9 | KB5001779 | Apr 13, 2021 | |
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