EUVD-2026-42723

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...

CVE-2026-57032

CVE-2026-57032 describes an improper handling of undefined parameters in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices. When attempting to subscribe to an unsupported telemetry sensor path on EX2300, EX3400, EX4000, EX4100, and EX4400 via gRPC, the Front Pan...

CVE-2026-33802

Summary: CVE-2026-33802 is a Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series switches (EX2300, EX4000, EX4100, EX4300-MP, EX4400) that allows a locally authenticated attacker with no specific permissions to execute a privileged CLI command and trigger a Do...

CVE-2026-21913

An Incorrect Initialization of Resource vulnerability in the Internal Device Manager IDM of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. On EX4000 models with 48 ports EX4000-48T, EX4000-48P, EX4000-48MP a high volu...

CVE-2026-21913

An Incorrect Initialization of Resource vulnerability in the Internal Device Manager IDM of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. On EX4000 models with 48 ports EX4000-48T, EX4000-48P, EX4000-48MP a high volu...

CVE-2026-21913

An Incorrect Initialization of Resource vulnerability in the Internal Device Manager IDM of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. On EX4000 models with 48 ports EX4000-48T, EX4000-48P, EX4000-48MP a high volu...

EUVD-2026-2688

An Incorrect Initialization of Resource vulnerability in the Internal Device Manager IDM of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. On EX4000 models with 48 ports EX4000-48T, EX4000-48P, EX4000-48MP a high volu...

CVE-2026-21913

An Incorrect Initialization of Resource vulnerability in the Internal Device Manager IDM of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. On EX4000 models with 48 ports EX4000-48T, EX4000-48P, EX4000-48MP a high volu...

CVE-2026-21913 Junos OS: EX4000: A high volume of traffic destined to the device leads to a crash and restart

An Incorrect Initialization of Resource vulnerability in the Internal Device Manager IDM of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. On EX4000 models with 48 ports EX4000-48T, EX4000-48P, EX4000-48MP a high volu...

CVE-2026-21913

CVE-2026-21913 affects Juniper Networks Junos OS on EX4000-48T, EX4000-48P and EX4000-48MP. The vulnerability is an incorrect initialization of the Internal Device Manager (IDM) that allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). A high volume of traffic dir...

CVE-2026-21913 Junos OS: EX4000: A high volume of traffic destined to the device leads to a crash and restart

An Incorrect Initialization of Resource vulnerability in the Internal Device Manager IDM of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. On EX4000 models with 48 ports EX4000-48T, EX4000-48P, EX4000-48MP a high volu...

PT-2026-3127

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS on EX4000-48T, EX4000-48P and EX4000-48MP versions prior to 24.4R2 Juniper Networks Junos OS on EX4000-48T, EX4000-48P and EX4000-48MP versions prior to 25.2R1-S2 Juniper Networks Junos OS on EX4000-48T, EX4000-48P an...

EUVD-2023-48550

Malicious code in bioql PyPI...

The vulnerability of Juniper Networks Junos OS routers of the QFX5000 and EX4000 series, related to memory resource exhaustion, allows a hacker to trigger a service failure.

The vulnerability of Juniper Networks Junos OS routers of the QFX5000 and EX4000 series is related to the exhaustion of memory resources. Exploiting this vulnerability can allow a malicious actor to cause service interruptions...

CVE-2023-44191

An Allocation of Resources Without Limits or Throttling vulnerability in Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service DoS. On all Junos OS QFX5000 Series and EX4000 Series platforms, when a high number of VLANs are configured, a specific...

Code injection

An Allocation of Resources Without Limits or Throttling vulnerability in Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service DoS. On all Junos OS QFX5000 Series and EX4000 Series platforms, when a high number of VLANs are configured, a specific...

CVE-2023-44191 Junos OS: QFX5000 Series and EX4000 Series: Denial of Service (DoS) on a large scale VLAN due to PFE hogging

An Allocation of Resources Without Limits or Throttling vulnerability in Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service DoS. On all Junos OS QFX5000 Series and EX4000 Series platforms, when a high number of VLANs are configured, a specific...