Aug 2025: Microsoft Exchange Server Spoofing Vulnerability
CVE-2025-25006 Published on August 12, 2025

Microsoft Exchange Server Spoofing Vulnerability
Improper handling of additional special element in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.

Vendor Advisory NVD

Vulnerability Analysis

Exploitation:

NONE

Automatable:

YES

Technical Impact:

PARTIAL

Weakness Type

Improper Handling of Additional Special Element

The software receives input from an upstream component, but it does not handle or incorrectly handles when an additional unexpected special element is provided.

Products Associated with CVE-2025-25006

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Microsoft Exchange Server

Microsoft Exchange Server 2019

Microsoft Exchange Server 2016

Microsoft Exchange Server Se

Affected Versions

Microsoft Exchange Server 2016 Cumulative Update 23:

Version 15.01.0.0 and below 15.01.2507.058 is affected.

Microsoft Exchange Server 2019 Cumulative Update 14:

Version 15.02.0.0 and below 15.02.1544.033 is affected.

Microsoft Exchange Server 2019 Cumulative Update 15:

Version 15.02.0.0 and below 15.02.1748.036 is affected.

Microsoft Exchange Server Subscription Edition RTM:

Version 15.02.0.0 and below 15.02.2562.020 is affected.

Exploit Probability

EPSS

0.92%

Percentile

60.57%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.