CVE-2026-21535

high Microsoft
CVSS v3 Base Score
8.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
EPSS Score
0.1%
Exploitation probability in 30 days
Top 73% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Published: February 19, 2026 (83 days ago)
Last Modified: March 13, 2026
Vendor: Microsoft
Source: MITRE

Description

Improper access control in Microsoft Teams allows an unauthorized attacker to disclose information over a network.

CWE

CWE-284

Affected Products

Microsoft Microsoft Teams

References

🔗 msrc.microsoft.com