CVE-2021-26420 — HIGH (7.1)

Vulnerability Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

CVSS Score

7.1

HIGH

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

LOW

Affected Products

Vendor	Product	Versions
Microsoft	Sharepoint Enterprise Server	2016
Microsoft	Sharepoint Foundation	2013
Microsoft	Sharepoint Server	2019

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-2642PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-755/Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-2642PatchVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-755/Third Party AdvisoryVDB Entry

FAQ

What is CVE-2021-26420?

CVE-2021-26420 is a vulnerability with a CVSS score of 7.1 (HIGH). Microsoft SharePoint Server Remote Code Execution Vulnerability

How severe is CVE-2021-26420?

CVE-2021-26420 has been rated HIGH with a CVSS base score of 7.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26420?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Sharepoint Enterprise Server, Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.