Microsoft Exchange Server Spoofing Vulnerability
CVE-2021-24085

6.5MEDIUM

Key Information:

Vendor
Microsoft
Status
Microsoft Exchange Server 2019 Cumulative Update 8
Microsoft Exchange Server 2016 Cumulative Update 19
Microsoft Exchange Server 2019 Cumulative Update 7
Microsoft Exchange Server 2016 Cumulative Update 18
Vendor
CVE Published:
25 February 2021

Badges

👾 Exploit Exists🟡 Public PoC

Summary

Microsoft Exchange Server Spoofing Vulnerability

Affected Version(s)

Microsoft Exchange Server 2016 Cumulative Update 18 x64-based Systems 15.01.0

Microsoft Exchange Server 2016 Cumulative Update 19 x64-based Systems 15.01.0

Microsoft Exchange Server 2019 Cumulative Update 7 x64-based Systems 15.02.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-24085
Created by sourceincite

References

https://portal.msrc.microsoft.com/en-US/security-guidance...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

.