CVE-2020-1025

Microsoft Office Elevation of Privilege Vulnerability

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 8.15% Top 10%
Vendor Advisory microsoft.com
Affected: Microsoft Skype for Business Server 2019 CU2
Affected: Microsoft Skype for Business Server 2015 CU 8
Affected: Microsoft Microsoft Lync Server 2013
Affected: Microsoft Microsoft SharePoint Enterprise Server 2016
Affected: Microsoft Microsoft SharePoint Server 2019
Affected: Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1
Published at:
Updated at:

References

Link Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-1025?
CVE-2020-1025 has been scored as a critical severity vulnerability.
How to fix CVE-2020-1025?
To fix CVE-2020-1025, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-1025 being actively exploited in the wild?
It is possible that CVE-2020-1025 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~8% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-1025?
CVE-2020-1025 affects Microsoft Skype for Business Server 2019 CU2, Microsoft Skype for Business Server 2015 CU 8, Microsoft Microsoft Lync Server 2013, Microsoft Microsoft SharePoint Enterprise Server 2016, Microsoft Microsoft SharePoint Server 2019, Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1.
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