Critical severity · published Apr 13, 2021
CVE-2021-28480
Microsoft Exchange Server Remote Code Execution Vulnerability
9.8
CVSS
71.2%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)71.2% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ES
Exchange Server · Microsoft
2013; 2016; 2016; 2019; 2019 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-28480
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-28480
Patch
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28480
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