msrc_CVE-2026-54998

csafUSmsrc_csaf

Microsoft Exchange Online Elevation of Privilege Vulnerability

view advisory published 2026-07-02

To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-54998US—OT elevatedExploit
Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
02

references

External citations — patches, advisories, analysis.

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