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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.

PUBLISHED Reserved 2026-04-30 | Published 2026-05-14 | Updated 2026-05-14 | Assigner microsoft




HIGH: 8.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

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affected

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affected

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affected

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affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42897 (Microsoft Exchange Server Spoofing Vulnerability) vendor-advisory patch

cve.org (CVE-2026-42897)

nvd.nist.gov (CVE-2026-42897)

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