High severity · published Feb 25, 2021
CVE-2021-1726
Microsoft SharePoint Server Spoofing Vulnerability
8.0
CVSS
2.1%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.1% · higher than 82% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SH
SharePoint · Microsoft
2019 · source: NVD
WI
Windows · Microsoft
20h2; 1607; 1803; 1809; 1909; 2004 · source: NVD
SE
Sharepoint Enterprise Server · Microsoft
2016 · source: NVD
SF
Sharepoint Foundation · Microsoft
2010; 2013 · source: NVD
W7
Windows 7 · Microsoft
All versions, or not specified · source: NVD
W8
Windows 8.1 · Microsoft
All versions, or not specified · source: NVD
WR
Windows RT 8.1 · Microsoft
All versions, or not specified · source: NVD
WS
Windows Server 2008 · Microsoft
r2 · source: NVD
WS
Windows Server 2012 · Microsoft
r2 · source: NVD
WS
Windows Server 2016 · Microsoft
20h2; 1909; 2004 · source: NVD
WS
Windows Server 2019 · Microsoft
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-1726
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-1726
Patch
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1726
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