CVE-2026-62918

HIGH CVSS 3.1: 7.5
Updated Aug 07, 2026
Microsoft
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-347 (Improper Verification of Cryptographic Signature)
Vendor Microsoft
Public PoC No

Improper verification of cryptographic signature in Microsoft Teams allows an unauthorized attacker to perform spoofing over a network.

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

CVSS Vector v3.1