CVE-2024-1622Network attack vector

Remote service termination via propagated stream-setup failure

Published Feb 26, 2024 · Updated Feb 13, 2025

Denial of service in NLnet Labs Routinator 0.13.1 and earlier allows remote attackers to terminate the service via a rapid RTR reset. After accepting an RTR connection, the listener propagates a stream-setup failure into its accept loop, treating the listener socket as failed instead of dropping the reset connection. The flaw is reachable only when attackers can connect to a publicly exposed RTR server, and exploitation stops Routinator's validated routing-data service.

CVSS severity7.5
High
EPSS probability1.00%
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 NLnet Labs Routinator 0.13.1 and earlier allows remote attackers to terminate the service via a rapid RTR reset. After accepting an RTR connection, the listener propagates a stream-setup failure into its accept loop, treating the listener socket as failed instead of dropping the reset connection. The flaw is reachable only when attackers can connect to a publicly exposed RTR server, and exploitation stops Routinator's validated routing-data service.

The record

CVE
CVE-2024-1622
Published
Feb 26, 2024
Updated
Feb 13, 2025
Vendor
NLnet Labs
Product
Routinator
Classifications
CWE-754, CWE-253, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NLnet Labs · RoutinatorAffected versions are unavailable in this record.

Published CVSS scores

7.5NLnet LabsCVSS: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

CWE-754Improper Check for Unusual or Exceptional Conditions
CWE-253Incorrect Check of Function Return Value
T1499.004Application or System Exploitation

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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