CVE-2026-21903

CVE-2026-21903 is a stack-based buffer overflow in the Packet Forwarding Engine (pfe) of Juniper Networks Junos OS. A network-based attacker with low privileges can trigger a Denial-of-Service by subscribing to telemetry sensors at scale, which causes all FPC connections to drop, an FPC crash, an...

PT-2024-5542 · Juniper Networks · Junos

Name of the Vulnerable Software and Affected Versions: Junos OS versions 21.2R3-S5 through 21.2R3-S7 Junos OS versions 21.4R3-S4 through 21.4R3-S6 Junos OS versions 22.2R3 through 22.2R3-S4 Junos OS versions 22.3R2 through 22.3R3-S2 Junos OS versions 22.4R1 through 22.4R3 Junos OS versions 23.2R1...

CVE-2024-30402

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Layer 2 Address Learning Daemon l2ald of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS. When telemetry requests are sent to the device, and t...

CVE-2021-31377

An Incorrect Permission Assignment for Critical Resource vulnerability of a certain file in the filesystem of Junos OS allows a local authenticated attacker to cause routing process daemon RPD to crash and restart, causing a Denial of Service DoS. Repeated actions by the attacker will create a...

CVE-2021-31370

An Incomplete List of Disallowed Inputs vulnerability in Packet Forwarding Engine PFE of Juniper Networks Junos OS on QFX5000 Series and EX4600 Series allows an adjacent unauthenticated attacker which sends a high rate of specific multicast traffic to cause control traffic received from the netwo...

CVE-2020-1662

On Juniper Networks Junos OS and Junos OS Evolved devices, BGP session flapping can lead to a routing process daemon RPD crash and restart, limiting the attack surface to configured BGP peers. This issue only affects devices with BGP damping in combination with accepted-prefix-limit configuration...