CVE-2022-22234

Low-privilege DoS via SFP state inconsistency

Published Oct 18, 2022 · Updated May 9, 2025

Improper state consistency in Junos OS PFE allows local users to cause partial service interruption by making SFP ports appear unplugged. The PFE can lose consistency between SFP presence representations while processing heavy CLI activity, changing ports to an unplugged state despite no physical fault. A locally authenticated low-privilege user must create the busy condition; traffic is disrupted temporarily and port states recover when load falls.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper state consistency in Junos OS PFE allows local users to cause partial service interruption by making SFP ports appear unplugged. The PFE can lose consistency between SFP presence representations while processing heavy CLI activity, changing ports to an unplugged state despite no physical fault. A locally authenticated low-privilege user must create the busy condition; traffic is disrupted temporarily and port states recover when load falls.

The record

CVE
CVE-2022-22234
Published
Oct 18, 2022
Updated
May 9, 2025
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-1250, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 18, 2022CVE publishedPublication date reported by the CVE source.
  2. May 9, 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=19.1 <19.1R3-S9
  2. Affected versionversion=19.2 <19.2R1-S9, 19.2R3-S5
  3. Affected versionversion=19.3 <19.3R3-S6
  4. Affected versionversion=19.4 <19.4R2-S7, 19.4R3-S8
  5. Affected versionversion=20.1 <20.1R3-S4
  6. Affected versionversion=20.2 <20.2R3-S4
  7. Affected versionversion=20.3 <20.3R3-S4
  8. Affected versionversion=20.4 <20.4R3-S3
  9. Affected versionversion=21.1 <21.1R3-S1
  10. Affected versionversion=21.2 <21.2R3
  11. Affected versionversion=21.3 <21.3R2
  12. Affected versionversion=21.4 <21.4R2
  13. Affected versionversion=unspecified <18.4R3-S11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Juniper Networks · Junos OSversion=19.1 <19.1R3-S9; version=19.2 <19.2R1-S9, 19.2R3-S5; version=19.3 <19.3R3-S6; version=19.4 <19.4R2-S7, 19.4R3-S8; version=20.1 <20.1R3-S4; version=20.2 <20.2R3-S4; version=20.3 <20.3R3-S4; version=20.4 <20.4R3-S3; version=21.1 <21.1R3-S1; version=21.2 <21.2R3; version=21.3 <21.3R2; version=21.4 <21.4R2; version=unspecified <18.4R3-S11

Published CVSS scores

5.5Juniper NetworksCVSS:3.1/AV:L/AC:L/PR:L/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1250Improper Preservation of Consistency Between Independent Representations of Shared State
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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