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VULNERABILITIES

CVE-2020-1025 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025 CVEPatchVendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025 [email protected]PatchVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-20Improper Input Validation[email protected]

Affected Products

ProductVersions
microsoft lync
2013

CPE

  • cpe:2.3:a:microsoft:lync:2013:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
microsoft sharepoint enterprise server
2016

CPE

  • cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
microsoft sharepoint foundation
2013 sp1

CPE

  • cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*

Remediation

  • No remediation found in references.
microsoft sharepoint server
2019

CPE

  • cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
microsoft skype for business
2015 cumulative_update_8
2019 cumulative_update_2

CPE

  • cpe:2.3:a:microsoft:skype_for_business:2015:cumulative_update_8:*:*:*:*:*:*
  • cpe:2.3:a:microsoft:skype_for_business:2019:cumulative_update_2:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2020-1025
NVD Published Date:
Jul 14, 2020
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2020-1025 Details - Not Deferred