CVE-2026-84003

HIGH CVSS 3.1: 7.4 EPSS 0.43%
Updated Sep 08, 2026
Microsoft
Parameter Value
CVSS 7.4 (HIGH)
Type CWE-294 (Authentication Bypass by Capture-Replay)
Vendor Microsoft
Public PoC No

Authentication bypass by capture-replay in Microsoft Authentication Library (MSAL) for Node.js allows an unauthorized attacker to perform spoofing over a network.

Attack Parameters

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

Impact Assessment

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

CVSS Vector v3.1