An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).

When a device has a Layer 3 or an IRB interface configured in a VPLS instance and specific traffic is received, the evo-pfemand processes crashes which causes a service outage for the respective FPC until the system is recovered manually.

This issue only affects Junos OS Evolved 22.4R2-S1 and 22.4R2-S2 releases and is fixed in 22.4R3. No other releases are affected.
Advisories
Source ID Title
EUVD EUVD EUVD-2024-38061 An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS). When a device has a Layer 3 or an IRB interface configured in a VPLS instance and specific traffic is received, the evo-pfemand processes crashes which causes a service outage for the respective FPC until the system is recovered manually. This issue only affects Junos OS Evolved 22.4R2-S1 and 22.4R2-S2 releases and is fixed in 22.4R3. No other releases are affected.
Fixes

Solution

The following software releases have been updated to resolve this specific issue: 22.4R3-EVO, and all subsequent releases.


Workaround

There are no known workarounds for this issue.

References
History

No history.

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: juniper

Published:

Updated: 2024-08-02T04:26:15.853Z

Reserved: 2024-06-25T15:12:53.241Z

Link: CVE-2024-39535

cve-icon Vulnrichment

Updated: 2024-07-12T18:09:47.379Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-07-11T17:15:10.900

Modified: 2024-11-21T09:27:57.230

Link: CVE-2024-39535

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-12T22:44:40Z

Weaknesses