CVE-2025-47979

Local information disclosure via sensitive log entries

Published Oct 14, 2025 · Updated Oct 14, 2025

Sensitive-data logging in Windows Failover Cluster allows local users to read confidential information from affected Windows Server systems. The component writes sensitive information into a local log file, but Microsoft has not disclosed the logging path, trigger, or exposed data fields. A low-privileged local account is required; the published impact is limited to confidentiality, with no integrity or availability effect.

CVSS severity5.5
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data logging in Windows Failover Cluster allows local users to read confidential information from affected Windows Server systems. The component writes sensitive information into a local log file, but Microsoft has not disclosed the logging path, trigger, or exposed data fields. A low-privileged local account is required; the published impact is limited to confidentiality, with no integrity or availability effect.

The record

CVE
CVE-2025-47979
Published
Oct 14, 2025
Updated
Oct 14, 2025
Vendor
Microsoft
Product
Windows Server 2025 (Server Core installation)
Classifications
CWE-532, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.26100.0 <10.0.26100.6899

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.6899
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1913
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.6899

Published CVSS scores

5.5Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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