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HIGH · 8.4

CVE-2025-53782

Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally.

Vulnerability Description

Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally.

CVSS Score

8.4

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftExchange Server< 15.02.2562.029

Related Weaknesses (CWE)

CWE-303

References

FAQ

What is CVE-2025-53782?

CVE-2025-53782 is a vulnerability with a CVSS score of 8.4 (HIGH). Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally.

How severe is CVE-2025-53782?

CVE-2025-53782 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-53782?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Exchange Server.