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Description

Improper input validation in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

PUBLISHED Reserved 2025-11-06 | Published 2025-12-09 | Updated 2025-12-11 | Assigner microsoft




HIGH: 7.5CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-20: Improper Input Validation

Product status

15.02.0.0 (custom) before 15.02.1748.042
affected

15.01.0.0 (custom) before 15.01.2507.063
affected

15.02.0.0 (custom) before 15.02.2562.035
affected

15.02.0.0 (custom) before 15.02.1544.037
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64666 (Microsoft Exchange Server Elevation of Privilege Vulnerability) vendor-advisory

cve.org (CVE-2025-64666)

nvd.nist.gov (CVE-2025-64666)

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