CVE-2024-20690Network attack vector

Transfer misdirection via duplicate device-name spoofing

Published Jan 9, 2024 · Updated May 3, 2025

Spoofing in Microsoft Windows Nearby Sharing allows remote attackers to impersonate a discovered device and misdirect a transfer. Device discovery accepts a machine bearing the same displayed name as the sought device, while Microsoft has not disclosed the missing cryptographic identity check. Exploitation requires Nearby Sharing to be enabled and a user to search for and select the spoofed machine.

CVSS severity6.5
Medium
EPSS probability1.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Spoofing in Microsoft Windows Nearby Sharing allows remote attackers to impersonate a discovered device and misdirect a transfer. Device discovery accepts a machine bearing the same displayed name as the sought device, while Microsoft has not disclosed the missing cryptographic identity check. Exploitation requires Nearby Sharing to be enabled and a user to search for and select the spoofed machine.

The record

CVE
CVE-2024-20690
Published
Jan 9, 2024
Updated
May 3, 2025
Vendor
Microsoft
Product
Windows 11 version 21H2
Classifications
CWE-310, T1036.005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 9, 2024CVE publishedPublication date reported by the CVE source.
  2. May 3, 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 <10.0.22000.2713

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows 11 version 21H2version=10.0.0 <10.0.22000.2713
Microsoft · Windows 10 Version 21H2version=10.0.19043.0 <10.0.19044.3930
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.3007
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.3930
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.3007
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.3007
Microsoft · Windows 10 Version 1809version=10.0.0 <10.0.17763.5329; version=10.0.17763.0 <10.0.17763.5329

Published CVSS scores

6.5Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-310Cryptographic Issues
T1036.005Masquerading: Match Legitimate Resource Name or Location

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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