CVE-2020-1025
Plain English Summary
AI-powered analysis for quick understanding
This vulnerability allows an attacker to bypass authentication and gain unauthorized access to Microsoft SharePoint Server and Skype for Business Server. To exploit it, the attacker needs to modify an OAuth token, which means they must have some level of access to the system to create or alter the token.
Technical 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.
CVSS Vector Analysis
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploit Resources
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Official References
Quick Information
Published
Jul 14, 2020
over 5 years ago
Last Modified
Feb 23, 2026
about 1 month ago
Vendor
microsoft
Product
lync
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