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CVE-2026-56191

Опубликовано: 23 июл. 2026
Источник: msrc
CVSS3: 10
EPSS Низкий

Описание

Microsoft Exchange Online Tampering Vulnerability

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

FAQ

Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?

This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.

Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

Возможность эксплуатации

Publicly Disclosed

No

Exploited

No

Latest Software Release

N/A

EPSS

Процентиль: 48%
0.00667
Низкий

10 Critical

CVSS3

Связанные уязвимости

CVSS3: 10
nvd
10 дней назад

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

CVSS3: 10
github
10 дней назад

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

EPSS

Процентиль: 48%
0.00667
Низкий

10 Critical

CVSS3