CVE-2023-22407

Routing daemon crash via incomplete tunnel cleanup

Published Jan 12, 2023 · Updated Apr 7, 2025

Incomplete cleanup in rpd in Juniper Networks Junos OS and Junos OS Evolved allows remote attackers to crash rpd over an MPLS adjacency. During a tunnel configuration change from a directly connected router, rpd fails to clean up associated MPLS TE state before processing the change. Exploitation requires that routing adjacency and interrupts routing service without reported confidentiality or integrity impact.

CVSS severity6.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incomplete cleanup in rpd in Juniper Networks Junos OS and Junos OS Evolved allows remote attackers to crash rpd over an MPLS adjacency. During a tunnel configuration change from a directly connected router, rpd fails to clean up associated MPLS TE state before processing the change. Exploitation requires that routing adjacency and interrupts routing service without reported confidentiality or integrity impact.

The record

CVE
CVE-2023-22407
Published
Jan 12, 2023
Updated
Apr 7, 2025
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-459, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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=19.3 <19.3R3-EVO
  2. Affected versionversion=19.4 <19.4R3-EVO
  3. Affected versionversion=20.1 <20.1R3-EVO
  4. Affected versionversion=20.2 <20.2R2-EVO
  5. Affected versionversion=unspecified <19.2R3-EVO

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OS Evolvedversion=19.3 <19.3R3-EVO; version=19.4 <19.4R3-EVO; version=20.1 <20.1R3-EVO; version=20.2 <20.2R2-EVO; version=unspecified <19.2R3-EVO
Juniper Networks · Junos OSversion=19.1 <19.1R3-S2; version=19.2 <19.2R3; version=19.3 <19.3R3; version=19.4 <19.4R3; version=20.1 <20.1R2; version=20.2 <20.2R2; version=unspecified <18.4R2-S7

Published CVSS scores

6.5Juniper NetworksCVSS:3.1/AV:A/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-459Incomplete Cleanup
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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