CVE-2026-33781 Junos OS: EX Series, QFX Series: In a VXLAN scenario when specific control protocol packets are received, memory leaks and eventually no traffic is passed

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine pfe of Juniper Networks Junos OS on specific EX and QFX Series devices allow an unauthenticated, adjacent attacker to cause a complete Denial of Service DoS. On EX4k, and QFX5k platforms configur...

CVE-2024-30380

An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a Denial of Service DoS, which causes the l2cpd process to crash by sending a specific TLV. The l2cpd process is responsible for laye...

CVE-2024-30380

CVE-2024-30380 affects Junos OS and Junos OS Evolved. An adjacent, unauthenticated attacker can trigger a DoS by sending a specific TLV that crashes the l2cpd process, reinitializing STP/RSTP/MSTP/VSTP, MVRP and ERP. Affected versions are: Junos OS: before 20.4R3-S9; 21.2 before 21.2R3-S7; 21.3 b...

CVE-2024-21618 Junos OS and Junos OS Evolved: When LLDP is enabled and a malformed LLDP packet is received, l2cpd crashes

An Access of Memory Location After End of Buffer vulnerability in the Layer-2 Control Protocols Daemon l2cpd of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause Denial of Service DoS. On all Junos OS and Junos OS Evolved platforms, when LLDP is...