CVE-2026-57032
published 2026-07-09CVE-2026-57032: An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices allows an…
PriorityP338medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
EPSS
0.42%
34.1th percentile
An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices allows an authenticated attacker with low privileges to cause a Denial-of-Service (DoS).
If an attempt is made to subscribe to an unsupported telemetry sensor path on EX2300, EX3400, EX4000, EX4100 and EX4400 via gRPC, this causes the FPC to crash. This leads to a complete service outage until the module has automatically restarted.
The following log message can be seen when this issue happens:
agentd[]: AGENTD_RESOURCE_NOT_FOUND: No resource name found for
This issue affects Junos OS on
EX2300, EX3400, EX4000, EX4100 and EX4400
devices:
* all versions before 23.2R2-S7,
* 23.4 versions before 23.4R2-S8,
* 24.2 versions before 24.2R2-S5,
* 24.4 versions before 24.4R2.
Affected
41 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| juniper | junos | < 23.2 | 23.2 |
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CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv4.07.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:X
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GHSA
An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices allows an authenticated attacker with low privileges
ghsa_unreviewed·2026-07-10
CVE-2026-57032 [HIGH] CWE-236 An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices allows an authenticated attacker with low privileges
An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices allows an authenticated attacker with low privileges to cause a Denial-of-Service (DoS).
If an attempt is made to subscribe to an unsupported telemetry sensor path on EX2300, EX3400, EX4000, EX4100 and EX4400 via gRPC, this causes the FPC to crash. This leads to a complete service outage until the module has automatically restarted.
The following log message can be seen when this issue happens:
agentd[]: AGENTD_RESOURCE_NOT_FOUND: No resource name found for
This issue affects Junos OS on
EX2300, EX3400, EX4000, EX4100 and EX4400
devices:
* all versions before 23.2R2-S7,
* 23.4 versions before 23.4R2-S8,
* 24.2 versions before 24.2R2-S5,
VulDB
Juniper Junos OS up to 23.2R2-S6/23.4R2-S7/24.2R2-S4/24.4R1 Packet Forwarding Engine denial of service
vuldb·2026-07-10·CVSS 6.5
CVE-2026-57032 [MEDIUM] Juniper Junos OS up to 23.2R2-S6/23.4R2-S7/24.2R2-S4/24.4R1 Packet Forwarding Engine denial of service
A vulnerability was found in Juniper Junos OS up to 23.2R2-S6/23.4R2-S7/24.2R2-S4/24.4R1. It has been rated as critical. Impacted is an unknown function of the component Packet Forwarding Engine. Performing a manipulation results in denial of service.
This vulnerability is cataloged as CVE-2026-57032. It is possible to initiate the attack remotely. There is no exploit available.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-07-09
Published