Vulnerability Intelligence Report
Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-27078
Microsoft Exchange Server Remote Code Execution Vulnerability
No Active Exploit Signals
CVSS Base Score
9.1
CRITICAL
Exploitability:2.3
Impact Score:6.1
EPSS Probability:18.34%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Microsoft Exchange Server 2013 Cumulative Update 23 | 15.00.0 < 15.00.1497.012 (affected) |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 18 | 15.01.0 < 15.01.2106.013 (affected) |
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 19 | 15.01.0 < 15.01.2176.009 (affected) |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 7 | 15.02.0 < 15.02.0721.013 (affected) |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 8 | 15.02.0 < 15.02.0792.010 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
18.343%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2021-02-10T00:00:00 |
| Published | 2021-03-02T23:55:28 |
| Patch Date | 2021-03-02 |
| Last Updated | 2026-08-19T16:30:51 |
Community Chatter & Buzz