CVE-2026-21921

A Use After Free vulnerability in the chassis daemon chassisd of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker authenticated with low privileges to cause a Denial-of-Service DoS. When telemetry collectors are frequently subscribing and unsubscribing to sensors...

CVE-2026-21921

A Use After Free vulnerability in the chassis daemon chassisd of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker authenticated with low privileges to cause a Denial-of-Service DoS. When telemetry collectors are frequently subscribing and unsubscribing to sensors...

CVE-2026-21903 Junos OS: Subscribing to telemetry sensors at scale causes all FPCs to crash

A Stack-based Buffer Overflow vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS allows a network-based attacker, authenticated with low privileges to cause a Denial-of-Service DoS. Subscribing to telemetry sensors at scale causes all FPC connections to drop, resulting...

CVE-2026-21903 Junos OS: Subscribing to telemetry sensors at scale causes all FPCs to crash

A Stack-based Buffer Overflow vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS allows a network-based attacker, authenticated with low privileges to cause a Denial-of-Service DoS. Subscribing to telemetry sensors at scale causes all FPC connections to drop, resulting...

EUVD-2026-2692

A Stack-based Buffer Overflow vulnerability in the Packet Forwarding Engine pfe of Juniper Networks Junos OS allows a network-based attacker, authenticated with low privileges to cause a Denial-of-Service DoS. Subscribing to telemetry sensors at scale causes all FPC connections to drop, resulting...

PT-2026-3118

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS versions prior to 22.4R3-S7 Juniper Networks Junos OS versions prior to 23.2R2-S4 Juniper Networks Junos OS versions prior to 23.4R2 Description A Stack-based Buffer Overflow exists in the Packet Forwarding Engine pfe...