CVE-2023-22392

Service interruption via unsupported flow-route memory leak

Published Oct 12, 2023 · Updated Aug 2, 2024

Memory leakage in Junos OS on affected PTX and QFX10000 devices allows remote attackers on an adjacent network to interrupt service. Installing an unsupported flow-route received over an established BGP session into the Packet Forwarding Engine fails to release FPC heap memory. Reachability requires an established BGP session and one of the specified chassis and FPC configurations; repeated installations deplete forwarding-plane memory.

CVSS severity6.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in Junos OS on affected PTX and QFX10000 devices allows remote attackers on an adjacent network to interrupt service. Installing an unsupported flow-route received over an established BGP session into the Packet Forwarding Engine fails to release FPC heap memory. Reachability requires an established BGP session and one of the specified chassis and FPC configurations; repeated installations deplete forwarding-plane memory.

The record

CVE
CVE-2023-22392
Published
Oct 12, 2023
Updated
Aug 2, 2024
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-401, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=0 <20.4R3-S5
  2. Affected versionversion=0 <20.4R3-S8
  3. Affected versionversion=21.1 <21.1R3-S4
  4. Affected versionversion=21.1R1 <21.1*
  5. Affected versionversion=21.2 <21.2R3-S2
  6. Affected versionversion=21.2 <21.2R3-S6
  7. Affected versionversion=21.3 <21.3R3
  8. Affected versionversion=21.3 <21.3R3-S5
  9. Affected versionversion=21.4 <21.4R2-S2, 21.4R3
  10. Affected versionversion=21.4 <21.4R3-S4
  11. Affected versionversion=22.1 <22.1R1-S2, 22.1R2
  12. Affected versionversion=22.1 <22.1R3-S3
  13. Affected versionversion=22.2 <22.2R3-S1
  14. Affected versionversion=22.3 <22.3R2-S2, 22.3R3
  15. Affected versionversion=22.4 <22.4R2

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OSversion=0 <20.4R3-S5; version=0 <20.4R3-S8; version=21.1 <21.1R3-S4; version=21.1R1 <21.1*; version=21.2 <21.2R3-S2; version=21.2 <21.2R3-S6; version=21.3 <21.3R3; version=21.3 <21.3R3-S5; version=21.4 <21.4R2-S2, 21.4R3; version=21.4 <21.4R3-S4; version=22.1 <22.1R1-S2, 22.1R2; version=22.1 <22.1R3-S3; version=22.2 <22.2R3-S1; version=22.3 <22.3R2-S2, 22.3R3; version=22.4 <22.4R2

Published CVSS scores

6.5NISTCVSS: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-401Missing Release of Memory after Effective Lifetime
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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