CVE-2026-42897 PUBLISHED

Microsoft Exchange Server Spoofing Vulnerability

Assigner: microsoft
Reserved: 30.04.2026 Published: 14.05.2026 Updated: 15.05.2026

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.

Metrics

CVSS Vector: 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
CVSS Score: 8.1

Product Status

Vendor Microsoft
Product Microsoft Exchange Server 2016 Cumulative Update 23
Versions
  • Version - is affected
Vendor Microsoft
Product Microsoft Exchange Server 2019 Cumulative Update 14
Versions
  • Version - is affected
Vendor Microsoft
Product Microsoft Exchange Server 2019 Cumulative Update 15
Versions
  • Version - is affected
Vendor Microsoft
Product Microsoft Exchange Server Subscription Edition RTM
Versions
  • Version - is affected

References

Problem Types