NewA calmer, faster ZeroHour — security assessments on articles, story timelines and search from any page.

Vulnerability2 · 1 read

CVE-2021-28480

CVSS 3.1: 9.8 critical
EPSS: 71%p99
Published: Apr 13, 2021 · Apr 13, 2021
Modified: Jun 17, 2026

Analyze CVE-2021-28480 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

Description · NVD

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 (71.2%)

In the news

7 stories

Expert released PoC exploit for Microsoft Exchange flaw

Security AffairsMay 3, 21:08 UTC · May 3, 2021Exploit / PoCCVE-2021-28482 CVE-2021-28480 CVE-2021-28481+12

60

Threat Source Newsletter (April 15, 2021)

Cisco TalosApr 15, 18:00 UTC · Apr 15, 2021RansomwareCVE-2021-28480 CVE-2021-28481 CVE-2021-28482+13 · 2 reads

60

NSA Discovers New Vulnerabilities Affecting Microsoft Exchange Servers

The Hacker NewsApr 15, 00:00 UTC · Apr 15, 2021VulnerabilityExploitedCVE-2021-28310 CVE-2021-1732 CVE-2021-28480+63 · 2 reads

60

Microsoft Patch Tuesday, April 2021 Edition

Krebs on SecurityApr 15, 00:00 UTC · Apr 15, 2021VulnerabilityExploitedCVE-2021-28480 CVE-2021-28481 CVE-2021-28482+62

60

Microsoft Patches Four More Critical Exchange Server Bugs

Infosecurity MagazineApr 14, 10:30 UTC · Apr 14, 2021VulnerabilityExploitedCVE-2021-28310 CVE-2021-28480 CVE-2021-28481+32 · 1 read

60

Microsoft fixes 2 critical Exchange Server flaws reported by the NSA

Security AffairsApr 13, 21:05 UTC · Apr 13, 2021Exploit / PoCCVE-2021-28480 CVE-2021-28481 CVE-2021-28482+12 · 1 read

60

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

Cisco TalosApr 13, 17:37 UTC · Apr 13, 2021VulnerabilityExploitedCVE-2021-28480 CVE-2021-28481 CVE-2021-28482+73 · 1 read

60