CVE-2022-22218Network attack vector

Unauthenticated pkid crash via unexpected CA response

Published Oct 18, 2022 · Updated May 12, 2025

Denial of service in Juniper Networks Junos OS on SRX Series allows remote attackers to crash pkid during CMPv2 auto-re-enrollment. The process fails to handle an unexpected response from the configured CA server and terminates instead of rejecting the response. Exposure requires the non-default CMPv2 auto-re-enrollment configuration; the crash interrupts PKI services until the process is restarted.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Juniper Networks Junos OS on SRX Series allows remote attackers to crash pkid during CMPv2 auto-re-enrollment. The process fails to handle an unexpected response from the configured CA server and terminates instead of rejecting the response. Exposure requires the non-default CMPv2 auto-re-enrollment configuration; the crash interrupts PKI services until the process is restarted.

The record

CVE
CVE-2022-22218
Published
Oct 18, 2022
Updated
May 12, 2025
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-754, T1499
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=19.2 <19.2R3-S6
  2. Affected versionversion=19.3 <19.3R3-S7
  3. Affected versionversion=19.4 <19.4R3-S9
  4. Affected versionversion=20.2 <20.2R3-S5
  5. Affected versionversion=20.3 <20.3R3-S4
  6. Affected versionversion=20.4 <20.4R3-S4
  7. Affected versionversion=21.1 <21.1R3-S1
  8. Affected versionversion=21.2 <21.2R3
  9. Affected versionversion=21.3 <21.3R2
  10. Affected versionversion=21.4 <21.4R2
  11. Affected versionversion=unspecified <19.1R3-S9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

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

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
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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