CVE-2023-24939Network attack vector

Unauthenticated Server for NFS service interruption

Published May 9, 2023 · Updated Jul 10, 2025

Denial of service in Microsoft Server for NFS allows remote attackers to interrupt the service through a crafted network request. Microsoft has not disclosed the request type, affected handler, or processing error that causes the interruption. Reachability requires an affected NFS component to accept network traffic; no data disclosure or modification is reported.

CVSS severity7.5
High
EPSS probability4.66%
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 Server for NFS allows remote attackers to interrupt the service through a crafted network request. Microsoft has not disclosed the request type, affected handler, or processing error that causes the interruption. Reachability requires an affected NFS component to accept network traffic; no data disclosure or modification is reported.

The record

CVE
CVE-2023-24939
Published
May 9, 2023
Updated
Jul 10, 2025
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=10.0.10240.0 <10.0.10240.19926

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.19926
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.4377
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.5921
Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.1936
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.24266
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.24266
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.2965
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.5921
Microsoft · Windows 10 Version 20H2version=10.0.0 <10.0.19042.2965
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.2965
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.20969
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.4377
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.1702
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.5921
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.1726
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.4377; version=10.0.17763.0 <10.0.17763.4377
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.20969

Published CVSS scores

7.5Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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
Privilegesunauthenticated
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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