CVE-2026-66302
critical
Microsoft CVSS v3 Base Score
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Published: September 8, 2026 (2 days ago)
Last Modified: September 9, 2026
Vendor: Microsoft
Source: MITRE
Vulnerability Report
Generated by CyberWatcher
Description
External control of file name or path in Skype for Business allows an unauthorized attacker to execute code over a network.
CWE
CWE-73Affected Products
Microsoft Skype for Business Server 2015 CU13Microsoft Skype for Business Server 2019 CU8Microsoft Skype for Business Server Subscription Edition CU1