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.
References
History

Thu, 22 Jan 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Juniper
Juniper acx7020
Juniper acx7024
Juniper acx7024x
Juniper acx7100
Juniper acx7300
Juniper acx7509
Juniper junos Os Evolved
CPEs cpe:2.3:h:juniper:acx7020:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:acx7024:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:acx7024x:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:acx7100:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:acx7300:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:acx7509:-:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:22.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:22.4:r2-s2:*:*:*:*:*:*
Vendors & Products Juniper
Juniper acx7020
Juniper acx7024
Juniper acx7024x
Juniper acx7100
Juniper acx7300
Juniper acx7509
Juniper junos Os Evolved

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 : Analyzed

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

Modified: 2026-01-22T21:13:07.270

Link: CVE-2024-39535

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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