CVE-2026-83964

HIGH CVSS 3.1: 7.5 EPSS 0.11%
Updated Sep 25, 2026
Microsoft
Parameter Value
CVSS 7.5 (HIGH)
Affected Versions before 4.5
Fixed In 12.12
Type CWE-295 (Improper Certificate Validation)
Vendor Microsoft
Public PoC No

Adobe Connect is affected by an Improper Certificate Validation vulnerability that could lead to disclosure of sensitive memory. An attacker could leverage this vulnerability to disclose sensitive information. Exploitation of this issue does not require user interaction.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v3.1

Vulnerable Products 4

Configuration From (including) Up to (excluding)
Adobe Connect
cpe:2.3:a:adobe:connect:*:*:*:*:*:-:*:*
— 12.12
Apple Macos
cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*
— —
Microsoft Windows
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
— —
Adobe Connect_For_Mobile
cpe:2.3:a:adobe:connect_for_mobile:*:*:*:*:*:android:*:*
— 4.5