High severity · published Apr 11, 2023
CVE-2023-28288
Microsoft SharePoint Server Spoofing Vulnerability
8.1
CVSS
6.2%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.2% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SH
SharePoint · Microsoft
2013; 2016; 2019 · source: NVD
SF
Sharepoint Foundation · Microsoft
2013 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-28288
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-28288
Patch
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-28288
Third Party Advisory
http://packetstormsecurity.com/files/173126/Microsoft-SharePoint-Enterprise-Server-2016-Spoofing.html
More from SharePoint
9.8
CVE-2026-58644
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2026-50522
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2026-56164
Microsoft SharePoint Server Elevation of Privilege Vulnerability
9.8
CVE-2026-20963
Microsoft SharePoint Remote Code Execution Vulnerability
9.8
CVE-2025-53770
Microsoft SharePoint Server Remote Code Execution Vulnerability
