CVE-2026-55006CWE-1220

Microsoft Exchange Server Elevation of Privilege Vulnerability

High · published July 14, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
21.3
In the wild
Unconfirmed
What it is

Insufficient granularity of access control in Microsoft Exchange Server allows an authorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00298 · 21.3th percentile
Weakness
CWE-1220 · Insufficient Granularity of Access Control
Published
2026-07-14T17:04Z
EPSS history
Timeline
  • 14 JUL 17:04Z
    Microsoft Exchange Server Elevation of Privilege Vulnerability
    cvelistv5