Description
Improper input validation in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Affected products
microsoft: exchange server; microsoft: exchange server subscription edition
References1
- msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59248 Vendor Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - EPSS — exploit probability
- 1% percentile: 64 · as of 9 November 2026
- CWE
- CWE-20
Could this be exploited in your environment?
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