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CVE-2026-21260
HIGH
CVSS: 7.5
Published: 2026-02-10
Modified: 2026-06-17
Description
Exposure of sensitive information to an unauthorized actor in Microsoft Office Outlook allows an unauthorized attacker to perform spoofing over a network.
Affected Platforms
Microsoft 365 AppsMicrosoft Office Long Term Servicing ChannelMicrosoft Sharepoint ServerMicrosoft OfficeMicrosoft Outlook