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CVE-2026-56191

Microsoft Exchange Online

Description

Improper authentication in Microsoft Exchange Online allows an unauthorized attacker to perform tampering over a network.

CVSS 10EPSS 0.6669999999999999%Risk 1.06
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Published
2026-07-24 01:17:36
Affected versions
unknown
Type
Critical software
Last modified
2026-07-29 14:55:55
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H