EUVD-2026-42715

A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine pfe of Juniper Networks Junos OS on specific EX Series devices allows an unauthenticated adjacent attacker to cause a Denial-of-Service DoS.When sFlow is configured in a Virtual Chassis VC scenario...

CVE-2026-57027

A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine pfe of Juniper Networks Junos OS on specific EX Series devices allows an unauthenticated adjacent attacker to cause a Denial-of-Service DoS.When sFlow is configured in a Virtual Chassis VC scenario...

CVE-2026-57027 Junos OS: EX4100 Series, EX4400: With sFlow configured in a VC scenario multicast traffic leads to an FPC crash

A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine pfe of Juniper Networks Junos OS on specific EX Series devices allows an unauthenticated adjacent attacker to cause a Denial-of-Service DoS.When sFlow is configured in a Virtual Chassis VC scenario...

CVE-2026-57027

CVE-2026-57027 affects Juniper Networks Junos OS on EX4100 and EX4400 in sFlow VC deployments. When multicast traffic is exchanged between VC members, a memory leak in the packet forwarding engine (pfe) can cause an FPC crash and restart, leading to DoS for unauthenticated adjacent attackers. Aff...

CVE-2026-57027

A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine pfe of Juniper Networks Junos OS on specific EX Series devices allows an unauthenticated adjacent attacker to cause a Denial-of-Service DoS.When sFlow is configured in a Virtual Chassis VC scenario...

CVE-2026-33773 Junos OS: EX Series, QFX Series: If the same egress filter is configured on both an IRB and a physical interface one of those is not applied

An Incorrect Initialization of Resource vulnerability in the packet forwarding engine pfe of Juniper Networks Junos OS on specific EX Series and QFX Series device allows an unauthenticated, network-based attacker to cause an integrity impact to downstream networks. When the same family inet or...

EUVD-2025-10519

Malicious code in bioql PyPI...

Juniper Junos OS Vulnerability (JSA79089)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA79089 advisory. - An Improper Isolation or Compartmentalization vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS on QFX5000 Series, or an EX4100 Series, EX4400...

CVE-2024-21595

An Improper Validation of Syntactic Correctness of Input vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service DoS. If an attacker sends high rate of specific ICMP traffic to a device with VXLAN...

PT-2024-1132 · Juniper Networks · Junos

Name of the Vulnerable Software and Affected Versions: Juniper Networks Junos OS versions 21.4R3 through 21.4R3-S4 Juniper Networks Junos OS versions 22.1R3 through 22.1R3-S3 Juniper Networks Junos OS versions 22.2R2 through 22.2R3-S1 Juniper Networks Junos OS versions 22.3 through 22.3R2-S2,...

CVE-2023-44203

An Improper Check or Handling of Exceptional Conditions vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS on QFX5000 Series, EX2300, EX3400, EX4100, EX4400 and EX4600 allows a adjacent attacker to send specific traffic, which leads to packet flooding, resulting in a...