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

Mon, 06 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 02 Jul 2026 22:30:00 +0000

Type Values Removed Values Added
Description Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.
Title Microsoft Exchange Online Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft exchange Online
Weaknesses CWE-863
CPEs cpe:2.3:a:microsoft:exchange_online:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft exchange Online
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-07-02T22:18:58.222Z

Updated: 2026-07-07T03:56:04.181Z

Reserved: 2026-06-16T14:10:05.869Z

Link: CVE-2026-54998

cve-icon Vulnrichment

Updated: 2026-07-06T15:33:40.576Z

cve-icon NVD

No data.

cve-icon Redhat

No data.