CVE-2024-2169Public exploitNetwork attack vector

Service interruption via self-perpetuating UDP replies

Published Mar 19, 2024 · Updated Sep 4, 2024

UDP loop flaws in WDS, RouterOS, and dproxy-nexgen allow remote attackers to interrupt services with spoofed packets. Their UDP handlers answer unauthenticated error or request messages without validating the source, allowing two vulnerable services to reply to each other indefinitely. Exploitation requires a spoofing-capable host and two responsive endpoints; it can exhaust both services and intervening network links, while WDS does not crash the host.

CVSS severityUnavailable
Unscored
EPSS probability5.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

UDP loop flaws in WDS, RouterOS, and dproxy-nexgen allow remote attackers to interrupt services with spoofed packets. Their UDP handlers answer unauthenticated error or request messages without validating the source, allowing two vulnerable services to reply to each other indefinitely. Exploitation requires a spoofing-capable host and two responsive endpoints; it can exhaust both services and intervening network links, while WDS does not crash the host.

The record

CVE
CVE-2024-2169
Published
Mar 19, 2024
Updated
Sep 4, 2024
Vendor
Microsoft
Product
Windows Deployment Services
Classifications
CWE-406, T1498.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2024Record 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=*
  2. Affected versionversion=0 <=*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Windows Deployment Servicesversion=*; version=0 <=*
MikroTik · RouterOSversion=0 <=7.13.2; version=* <=7.13.2
dproxy · dproxy-nexgenversion=0.1 <=0.5
dproxy Project · dproxy-nexgenversion=0.1 <=0.5

Published CVSS scores

No CVSS assessment is available in this record.

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 exploitPublished

Weakness, pattern, technique

CWE-406Insufficient Control of Network Message Volume (Network Amplification)
T1498.002Reflection Amplification

Public exploit references

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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