Oct 2025: Microsoft Exchange Server Spoofing Vulnerability
CVE-2025-59248 Published on October 14, 2025
Microsoft Exchange Server Spoofing Vulnerability
Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Weakness Type
Improper Input Validation
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Products Associated with CVE-2025-59248
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Affected Versions
Microsoft Exchange Server 2016 Cumulative Update 23:- Version 15.01.0.0 and below 15.01.2507.061 is affected.
- Version 15.02.0.0 and below 15.02.1544.036 is affected.
- Version 15.02.0.0 and below 15.02.1748.039 is affected.
- Version 15.02.0.0 and below 15.02.2562.029 is affected.
Exploit Probability
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.