CVE-2026-56191

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

EUVD-2026-48458

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

CVE-2026-56191 Microsoft Exchange Online Tampering Vulnerability

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CVE-2026-56191 Microsoft Exchange Online Tampering Vulnerability

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CVE-2026-56191

Technical details about CVE-2026-56191 are not provided in the connected documents. Public information here only cites improper authentication and tampering risk for Microsoft Exchange Online. Monitor for updates from official advisories.

Microsoft Exchange Online Tampering Vulnerability

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

EUVD-2026-41446

Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network...

CVE-2026-54998

Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network...

CVE-2026-54998

CVE-2026-54998 describes an incorrect authorization in Microsoft Exchange Online that enables an authorized attacker to elevate privileges over a network. This vulnerability impacts Exchange Online’s authorization checks, allowing escalation of access from an existing authorized state. The CVSS 3...

CVE-2026-54998 Microsoft Exchange Online Elevation of Privilege Vulnerability

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CVE-2026-54998

Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network...

CVE-2026-54998 Microsoft Exchange Online Elevation of Privilege Vulnerability

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Microsoft Exchange Online Elevation of Privilege Vulnerability

Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network...

PT-2026-55320

Name of the Vulnerable Software and Affected Versions Microsoft Exchange Online affected versions not specified Description Incorrect authorization allows an authorized attacker to elevate privileges over a network. Recommendations At the moment, there is no information about a newer version that...

CVE-2026-48582

Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network...

CVE-2026-48582 Microsoft Exchange Online Elevation of Privilege Vulnerability

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EUVD-2026-38090

Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network...

CVE-2026-48582 Microsoft Exchange Online Elevation of Privilege Vulnerability

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CVE-2026-48582

Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network...

PT-2026-51033

Name of the Vulnerable Software and Affected Versions Microsoft Exchange Online affected versions not specified Description Missing authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network. There have been reports of elevated activities targeti...