CVE-2020-1025

Microsoft Office Elevation of Privilege Vulnerability

CRITICAL
9.8
CVSS Score
Published: July 14, 2020 at 10:53 PM UTC
Updated: June 17, 2026 at 03:00 AM UTC
9 products affected across 1 vendorSharePoint ServerSharePoint Enterprise ServerSharePoint Foundation

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Severity
CRITICAL9.8
Exploit prediction
EPSS 6%

Description

An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server improperly handle OAuth token validation. An attacker who successfully exploited the vulnerability could bypass authentication and achieve improper access. To exploit this vulnerability, an attacker would need to modify the token. The update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < publication2013
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
15.0.0 ≤ v < publication15.0.020132013 sp1
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
2015 CU 8 ≤ v < publication7.0.0 ≤ v < publication20152015 CU 820197.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
16.0.0 ≤ v < publication16.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement
16.0.0 ≤ v < publication16.0.0
Affected range stops below publication, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-20

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