CISA既知の悪用された脆弱性
Microsoft Exchange Server contains a cross-site scripting vulnerability during web page generation in Outlook Web Access and when certain interaction conditions are met, arbitrary JavaScript can be executed in the browser context.
必要な対応:
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
期限:
2026-05-29
説明
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.
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参照
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42897Vendor AdvisoryMitigation