CVE-2022-34723

DPAPI master key disclosure to local users

Published Sep 13, 2022 · Updated Mar 11, 2025

Information disclosure in Windows DPAPI on Windows 11 version 21H2 before 10.0.22000.978 allows local users to read the DPAPI master key. Microsoft has not disclosed which DPAPI routine or operation incorrectly exposes the master key. Exploitation requires local low-privileged access and reveals protected key material without reported data modification or service interruption.

CVSS severity5.5
Medium
EPSS probability1.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Windows DPAPI on Windows 11 version 21H2 before 10.0.22000.978 allows local users to read the DPAPI master key. Microsoft has not disclosed which DPAPI routine or operation incorrectly exposes the master key. Exploitation requires local low-privileged access and reveals protected key material without reported data modification or service interruption.

The record

CVE
CVE-2022-34723
Published
Sep 13, 2022
Updated
Mar 11, 2025
Vendor
Microsoft
Product
Windows 11 version 21H2
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 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=10.0.0 <10.0.22000.978

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.978

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

No sourced classifications are available.

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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