CVE-2026-21527

medium Microsoft
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Score
9.5%
Exploitation probability in 30 days
Top 5% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Published: February 10, 2026 (150 days ago)
Last Modified: June 15, 2026
Vendor: Microsoft
Source: NVD

Description

User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

CWE

CWE-345

Affected Products

microsoft exchange servermicrosoft exchange server subscription edition

References

🔗 msrc.microsoft.com