CVE-2020-1025

CRITICAL

9.8

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung9.8

SchweregradCRITICAL

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht7/14/2020

Zuletzt geandert2/23/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

microsoft:lyncmicrosoft:sharepoint_enterprise_servermicrosoft:sharepoint_foundationmicrosoft:sharepoint_servermicrosoft:skype_for_business

Schwachen (CWE)

CWE-20

Referenzen

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025(secure@microsoft.com)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025(af854a3a-2127-422b-91ae-364da2661108)

IOC Korrelationen

Keine Korrelationen erfasst

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