CVE-2026-48582CWE-862

Microsoft Exchange Online Elevation of Privilege Vulnerability

Critical · published June 19, 2026

CVSS v3.1
9.6
EPSS
1%
Percentile
52.2
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00689 · 52.2th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-06-19T20:29Z
EPSS history
Timeline
  • 19 JUN 20:29Z
    Microsoft Exchange Online Elevation of Privilege Vulnerability
    cvelistv5