CVE-2022-22232Network attack vector

PFE restart via content-filtered transit traffic

Published Oct 18, 2022 · Updated May 9, 2025

NULL pointer dereference in Junos OS 21.4 and 22.1 on SRX Series allows remote attackers to crash and restart the PFE. Juniper identifies the locus as packet processing with UTM Enhanced Content Filtering, but does not disclose the traffic field or dereference path. The SRX must have Enhanced Content Filtering enabled and process specific transit traffic; exploitation interrupts forwarding while the PFE restarts.

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

NULL pointer dereference in Junos OS 21.4 and 22.1 on SRX Series allows remote attackers to crash and restart the PFE. Juniper identifies the locus as packet processing with UTM Enhanced Content Filtering, but does not disclose the traffic field or dereference path. The SRX must have Enhanced Content Filtering enabled and process specific transit traffic; exploitation interrupts forwarding while the PFE restarts.

The record

CVE
CVE-2022-22232
Published
Oct 18, 2022
Updated
May 9, 2025
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

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=21.4 <21.4R1-S2, 21.4R2
  2. Affected versionversion=22.1 <22.1R1-S1, 22.1R2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OSversion=21.4 <21.4R1-S2, 21.4R2; version=22.1 <22.1R1-S1, 22.1R2

Published CVSS scores

7.5Juniper Networks, Inc.CVSS: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-476NULL Pointer Dereference
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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