CVE-2025-62468

Local information disclosure via out-of-bounds read

Published Dec 9, 2025 · Updated Apr 16, 2026

Out-of-bounds read in Microsoft Windows Defender Firewall Service allows local users to disclose information from affected Windows builds. The service reads beyond an allocated buffer, but Microsoft has not disclosed the responsible interface, data structure, or attacker-controlled input. Exploitation requires local low-privileged access and no user interaction; the published impact is limited to reading information, with no integrity or availability effect.

CVSS severity5.5
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Microsoft Windows Defender Firewall Service allows local users to disclose information from affected Windows builds. The service reads beyond an allocated buffer, but Microsoft has not disclosed the responsible interface, data structure, or attacker-controlled input. Exploitation requires local low-privileged access and no user interaction; the published impact is limited to reading information, with no integrity or availability effect.

The record

CVE
CVE-2025-62468
Published
Dec 9, 2025
Updated
Apr 16, 2026
Vendor
Microsoft
Product
Windows Server 2025 (Server Core installation)
Classifications
CWE-125
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2026Record 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 <10.0.26100.7462

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.7462
Microsoft · Windows 11, version 25H2version=10.0.26200.0 <10.0.26200.7462
Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.7462
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.2025
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.6345
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.6345
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.7462

Published CVSS scores

5.5MicrosoftCVSS: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-125Out-of-bounds Read

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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