High severity8.8NVD Advisory· Published Jul 2, 2026· Updated Jul 7, 2026
CVE-2026-54998
CVE-2026-54998
Description
Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
Affected products
2(expand)+ 1 more
- (no CPE)
- cpe:2.3:a:microsoft:exchange_online:-:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54998nvdVendor Advisory
News mentions
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