עברית

Vulnerability Intelligence

CVE-2021-27078

Critical 9.1

Published
Last modified
NVD status
Modified

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

Affected products

microsoft: exchange server

References2

Metrics

CVSS 3.1
9.1 CRITICAL Score source: CNA CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS — exploit probability
18% percentile: 97 · as of 11 November 2026

Could this be exploited in your environment?

A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.