CVE-2020-1595

critical Microsoft
CVSS v3 Base Score
9.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score
0.5%
Exploitation probability in 30 days
Top 33% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: September 11, 2020 (2071 days ago)
Last Modified: February 23, 2026
Vendor: Microsoft

Description

<p>A remote code execution vulnerability exists in Microsoft SharePoint where APIs aren't properly protected from unsafe data input. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account.</p> <p>Exploitation of this vulnerability requires that a user access a susceptible API on an affected version of SharePoint with specially-formatted input.</p> <p>The security update addresses the vulnerability by correcting how SharePoint handles deserialization of untrusted data.</p>

CWE

CWE-494

Affected Products

microsoft sharepoint enterprise servermicrosoft sharepoint foundationmicrosoft sharepoint server

References

🔗 portal.msrc.microsoft.com 🔗 portal.msrc.microsoft.com