CVE-2026-42897

high Microsoft
CVSS v3 Base Score
8.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Confidentiality
High
Integrity
High
Availability
None
Published: May 14, 2026 (2 days ago)
Last Modified: May 15, 2026
Vendor: Microsoft
Source: MITRE

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

CWE

CWE-79

Affected Products

Microsoft Microsoft Exchange Server 2016 Cumulative Update 23Microsoft Microsoft Exchange Server 2019 Cumulative Update 14Microsoft Microsoft Exchange Server 2019 Cumulative Update 15Microsoft Microsoft Exchange Server Subscription Edition RTM

References

🔗 msrc.microsoft.com