CVE-2022-22228Network attack vector

RPD crash via improperly validated IPv6 packets

Published Oct 18, 2022 · Updated May 12, 2025

Improper input validation in the Junos OS routing protocol daemon allows remote attackers to crash rpd via crafted IPv6 packets. On SRv6-enabled devices, rpd fails to reject a specific valid packet sent to any configured IPv6 address and leaks memory until it produces a core. Exposure requires the documented SRv6, IS-IS, MPLS, and IPv6 interface configuration; repeated traffic interrupts routing by exhausting rpd memory.

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 the Junos OS routing protocol daemon allows remote attackers to crash rpd via crafted IPv6 packets. On SRv6-enabled devices, rpd fails to reject a specific valid packet sent to any configured IPv6 address and leaks memory until it produces a core. Exposure requires the documented SRv6, IS-IS, MPLS, and IPv6 interface configuration; repeated traffic interrupts routing by exhausting rpd memory.

The record

CVE
CVE-2022-22228
Published
Oct 18, 2022
Updated
May 12, 2025
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-1287, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 18, 2022CVE publishedPublication date reported by the CVE source.
  2. May 12, 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=21.1 <21.1R3-S2
  2. Affected versionversion=21.2 <21.2R3-S1
  3. Affected versionversion=21.3 <21.3R3
  4. Affected versionversion=21.4 <21.4R2
  5. Affected versionversion=22.1 <22.1R2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OSversion=21.1 <21.1R3-S2; version=21.2 <21.2R3-S1; version=21.3 <21.3R3; version=21.4 <21.4R2; version=22.1 <22.1R2

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-1287Improper Validation of Specified Type of Input
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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