Microsoft Skype For Business Server 2015 CU 8 vulnerabilities
3 vulnerabilities
Known vulnerabilities in Microsoft Skype For Business Server 2015 CU 8, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.
CVE-2021-24099microsoftlync_server+4
EPSS score3.20%
Skype for Business and Lync Denial of Service VulnerabilityCVE-2021-24073microsoftlync_server+3EPSS score1.80%
Skype for Business and Lync Spoofing VulnerabilityCVE-2020-1025microsoftlync+10EPSS score5.85%
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.