Home/CVE/Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to ele
CVE

CVE-2025-53782

Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to ele

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

HIGH · CVSS 8.4 EPSS 0.00064
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-303Incorrect Implementation of Authentication Algorithm
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Affected Products & Versions

2
microsoft exchange server< 15.02.2562.029
microsoft exchange serverall versions
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Scoring & Timeline

8.4
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Oct 2025 · 05:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2025-53782Elevation of Privilege
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