Spoofing Vulnerability in Microsoft Exchange Server
CVE-2025-25006

5.3MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Exchange Server 2019 Cumulative Update 15
Microsoft Exchange Server 2016 Cumulative Update 23
Microsoft Exchange Server 2019 Cumulative Update 14
Microsoft Exchange Server Subscription Edition Rtm
Vendor
CVE Published:
12 August 2025

What is CVE-2025-25006?

An unauthorized attacker could exploit an issue in Microsoft Exchange Server due to improper handling of a special element, enabling the attacker to perform spoofing attacks over the network. This vulnerability may allow malicious actors to manipulate communications and impersonate trusted entities, posing significant risks to the confidentiality and integrity of sensitive data.

Affected Version(s)

Microsoft Exchange Server 2016 Cumulative Update 23 x64-based Systems 15.01.0.0 < 15.01.2507.058

Microsoft Exchange Server 2019 Cumulative Update 14 x64-based Systems 15.02.0.0 < 15.02.1544.033

Microsoft Exchange Server 2019 Cumulative Update 15 x64-based Systems 15.02.0.0 < 15.02.1748.036

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-25006 : Spoofing Vulnerability in Microsoft Exchange Server