CVE-2022-37973Network attack vector

Remote service interruption via undisclosed LSM flaw

Published Oct 11, 2022 · Updated Jan 2, 2025

Denial of service in Microsoft Windows Local Session Manager allows remote authenticated users to interrupt affected systems over a network. Microsoft has not published the malformed request, affected LSM operation, or failure mode that produces the availability loss. Network access and low privileges are required; the record reports no confidentiality or integrity impact but does not distinguish a hang, crash, or reboot.

CVSS severity7.7
High
EPSS probability3.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Microsoft Windows Local Session Manager allows remote authenticated users to interrupt affected systems over a network. Microsoft has not published the malformed request, affected LSM operation, or failure mode that produces the availability loss. Network access and low privileges are required; the record reports no confidentiality or integrity impact but does not distinguish a hang, crash, or reboot.

The record

CVE
CVE-2022-37973
Published
Oct 11, 2022
Updated
Jan 2, 2025
Vendor
Microsoft
Product
Windows 10 Version 21H1
Classifications
T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Jan 2, 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 <10.0.19043.2130

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Windows 10 Version 21H1version=10.0.0 <10.0.19043.2130
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.1098
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.2130
Microsoft · Windows 10 Version 20H2version=10.0.0 <10.0.19042.2130
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.674
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.1129

Published CVSS scores

7.7Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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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