CVE-2026-45504CWE-918

Microsoft Exchange Server Elevation of Privilege Vulnerability

High · published June 9, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
55.4
In the wild
Unconfirmed
What it is

Server-side request forgery (ssrf) in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
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
CVSS v4.0
Not supplied
EPSS
0.00778 · 55.4th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-06-09T17:04Z
EPSS history
Timeline
  • 09 JUN 17:04Z
    Microsoft Exchange Server Elevation of Privilege Vulnerability
    cvelistv5