CVE-2025-59958

EUVD-2025-33399
An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on PTX Series allows an unauthenticated, network-based attacker to cause impact to confidentiality and availability.

When an output firewall filter is configured with one or more terms where the action is 'reject', packets matching these terms are erroneously sent to the Routing Engine (RE) and further processed there. Processing of these packets will consume limited RE resources. Also responses from the RE back to the source of this traffic could reveal confidential information about the affected device.
This issue only applies to firewall filters applied to WAN or revenue interfaces, so not the mgmt or lo0 interface of the routing-engine, nor any input filters.

This issue affects Junos OS Evolved on PTX Series:



  *  all versions before 22.4R3-EVO,
  *  23.2 versions before 23.2R2-EVO.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
juniperCNA
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 22%
Affected Products (NVD)
VendorProductVersion
juniperjunos_os_evolved
𝑥
< 22.4
juniperjunos_os_evolved
22.4
juniperjunos_os_evolved
22.4:r1
juniperjunos_os_evolved
22.4:r1-s1
juniperjunos_os_evolved
22.4:r1-s2
juniperjunos_os_evolved
22.4:r2
juniperjunos_os_evolved
22.4:r2-s1
juniperjunos_os_evolved
22.4:r2-s2
juniperjunos_os_evolved
23.2
juniperjunos_os_evolved
23.2:r1
juniperjunos_os_evolved
23.2:r1-s1
juniperjunos_os_evolved
23.2:r1-s2
𝑥
= Vulnerable software versions