CVE-2021-28481

—

CVSS 3.1

9.8 critical

EPSS

36%p98

Published

Apr 13, 2021 (Apr 13, 2021)

Modified

Jun 17, 2026

Description

Microsoft Exchange Server Remote Code Execution Vulnerability

Vendors: microsoft
Products: exchange server
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (36.2%)

In the news6 stories

Expert released PoC exploit for Microsoft Exchange flaw

Security AffairsMay 3, 21:08 UTC · May 3, 2021Exploit / PoC CVE-2021-28482 CVE-2021-28480 CVE-2021-28481+1 CVEs1

60

Threat Source Newsletter (April 15, 2021)

Cisco TalosApr 15, 18:00 UTC · Apr 15, 2021Ransomware CVE-2021-28480 CVE-2021-28481 CVE-2021-28482+1 CVEs

60

Microsoft Patch Tuesday, April 2021 Edition

Krebs on SecurityApr 15, 00:00 UTC · Apr 15, 2021Vulnerability in the wildCVE-2021-28480 CVE-2021-28481 CVE-2021-28482+6 CVEs

60

Microsoft Patches Four More Critical Exchange Server Bugs

Infosecurity MagazineApr 14, 10:30 UTC · Apr 14, 2021Vulnerability in the wildCVE-2021-28310 CVE-2021-28480 CVE-2021-28481+3 CVEs

60

Microsoft fixes 2 critical Exchange Server flaws reported by the NSA

Security AffairsApr 13, 21:05 UTC · Apr 13, 2021Exploit / PoC CVE-2021-28480 CVE-2021-28481 CVE-2021-28482+1 CVEs

60

Microsoft Patch Tuesday for April 2021 — Snort rules and prominent vulnerabilities

Cisco TalosApr 13, 17:37 UTC · Apr 13, 2021Vulnerability in the wildCVE-2021-28480 CVE-2021-28481 CVE-2021-28482+7 CVEs

60