CVE-2022-22223

Service interruption via invalid packet offset handling

Published Oct 18, 2022 · Updated May 12, 2025

Improper packet validation in Juniper Networks Junos OS on QFX10000 Series devices allows attackers to interrupt service. The Packet Forwarding Engine improperly validates an index, position, or offset while processing certain IPv4 or IPv6 packets, causing multiple LAG interfaces to detach. Exploitation requires transit IP/MPLS PHP operation with LAG interfaces; continued packet receipt sustains the detachment and interrupts traffic.

CVSS severity6.5
Medium
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper packet validation in Juniper Networks Junos OS on QFX10000 Series devices allows attackers to interrupt service. The Packet Forwarding Engine improperly validates an index, position, or offset while processing certain IPv4 or IPv6 packets, causing multiple LAG interfaces to detach. Exploitation requires transit IP/MPLS PHP operation with LAG interfaces; continued packet receipt sustains the detachment and interrupts traffic.

The record

CVE
CVE-2022-22223
Published
Oct 18, 2022
Updated
May 12, 2025
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-1285, T1499
Attack vector
adjacent
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=18.4 <18.4R2-S10, 18.4R3-S10
  2. Affected versionversion=19.1 <19.1R3-S8
  3. Affected versionversion=19.2 <19.2R3-S4
  4. Affected versionversion=19.3 <19.3R3-S5
  5. Affected versionversion=19.4 <19.4R2-S6, 19.4R3-S7
  6. Affected versionversion=20.1 <20.1R3-S3
  7. Affected versionversion=20.2 <20.2R3-S3
  8. Affected versionversion=20.3 <20.3R3-S2
  9. Affected versionversion=20.4 <20.4R3-S4
  10. Affected versionversion=21.1 <21.1R3
  11. Affected versionversion=21.2 <21.2R3-S3
  12. Affected versionversion=21.3 <21.3R3-S1
  13. Affected versionversion=unspecified <15.1R7-S11

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OSversion=18.4 <18.4R2-S10, 18.4R3-S10; version=19.1 <19.1R3-S8; version=19.2 <19.2R3-S4; version=19.3 <19.3R3-S5; version=19.4 <19.4R2-S6, 19.4R3-S7; version=20.1 <20.1R3-S3; version=20.2 <20.2R3-S3; version=20.3 <20.3R3-S2; version=20.4 <20.4R3-S4; version=21.1 <21.1R3; version=21.2 <21.2R3-S3; version=21.3 <21.3R3-S1; version=unspecified <15.1R7-S11

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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-1285Improper Validation of Specified Index, Position, or Offset in Input
T1499Endpoint Denial of Service

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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