CVE-2022-22184Network attack vector

BGP service interruption via malformed transitive attribute

Published Dec 23, 2022 · Updated Apr 14, 2025

Improper input validation in Junos OS 22.3R1 and Junos OS Evolved 22.3R1-EVO allows remote attackers to disrupt BGP sessions. The routing protocol daemon tears down an established BGP session with an update-message error when it parses a specific optional transitive attribute. An attacker must deliver the attribute over BGP, directly or through intermediate autonomous systems; repeated updates sustain the routing-service interruption.

CVSS severity7.5
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Junos OS 22.3R1 and Junos OS Evolved 22.3R1-EVO allows remote attackers to disrupt BGP sessions. The routing protocol daemon tears down an established BGP session with an update-message error when it parses a specific optional transitive attribute. An attacker must deliver the attribute over BGP, directly or through intermediate autonomous systems; repeated updates sustain the routing-service interruption.

The record

CVE
CVE-2022-22184
Published
Dec 23, 2022
Updated
Apr 14, 2025
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 23, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 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=22.3-EVO <22.3R1-S1-EVO

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OS Evolvedversion=22.3-EVO <22.3R1-S1-EVO
Juniper Networks · Junos OSversion=22.3 <22.3R1-S1

Published CVSS scores

7.5Juniper NetworksCVSS: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 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-20Improper Input Validation
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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