CVE-2021-28450: Microsoft SharePoint Denial of Service Vulnerability

Medium severity · published Apr 13, 2021

CVE-2021-28450

Microsoft SharePoint Denial of Service Vulnerability

5.0

CVSS

2.4%

EPSS

On KEV

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

Attack vector

Network

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

None

Integrity

None

Availability

Low

Scope

Changed

Exploitation

Is it being used?

Exploit prediction (EPSS)2.4% · higher than 84% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

SharePoint · Microsoft

2013; 2016; 2019 · source: NVD

Sharepoint Foundation · Microsoft

2010 · source: NVD

Affected product

SharePoint

Microsoft

All SharePoint CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-28450

CVE.org

https://www.cve.org/CVERecord?id=CVE-2021-28450

Patch

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28450