Home/CVE/Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
CVE

CVE-2025-59249

Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.

HIGH · CVSS 8.8 EPSS 0.00114
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Weakness Classification

CWE-1390Weak Authentication
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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

8.8
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 · 05:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/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-2025-59249Elevation of Privilege
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