CVE-2023-21707
High
High exploit probability or critical severity with a known exploit.
CVSS base
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
82.0%
99.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-502
Published 2023-02-14 · modified 2026-08-19
Description
Microsoft Exchange Server Remote Code Execution Vulnerability