CVE-2024-30384

Traffic interruption via PFE-crashing CLI command

Published Apr 12, 2024 · Updated Aug 2, 2024

Improper condition handling in affected Junos OS releases on EX4300 Series allows local users to interrupt traffic forwarding via a PFE crash. A specific CLI command reaches an exceptional condition that the Packet Forwarding Engine fails to handle, although Juniper has not disclosed the command or failed check. Low-privilege authenticated CLI access is required, and the PFE self-recovers after a temporary forwarding outage.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper condition handling in affected Junos OS releases on EX4300 Series allows local users to interrupt traffic forwarding via a PFE crash. A specific CLI command reaches an exceptional condition that the Packet Forwarding Engine fails to handle, although Juniper has not disclosed the command or failed check. Low-privilege authenticated CLI access is required, and the PFE self-recovers after a temporary forwarding outage.

The record

CVE
CVE-2024-30384
Published
Apr 12, 2024
Updated
Aug 2, 2024
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-754, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 12, 2024CVE 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

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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=0 <20.4R3-S10
  2. Affected versionversion=21.2 <21.2R3-S7
  3. Affected versionversion=21.4 <21.4R3-S6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Juniper Networks · Junos OSversion=0 <20.4R3-S10; version=21.2 <21.2R3-S7; version=21.4 <21.4R3-S6

Published CVSS scores

6.8Juniper Networks, Inc.CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
5.5Juniper Networks, Inc.CVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
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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