CVE-2026-21911

An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon l2cpd of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over label-switched interfaces LSI to stop while...

CVE-2026-21911

An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon l2cpd of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over label-switched interfaces LSI to stop while...

CVE-2026-21911 Junos OS Evolved: Flapping management interface causes MAC learning on label-switched interfaces to stop

An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon l2cpd of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over label-switched interfaces LSI to stop while...

EUVD-2026-2699

An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon l2cpd of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over label-switched interfaces LSI to stop while...

CVE-2026-21911

CVE-2026-21911 affects Juniper Networks Junos OS Evolved via an Incorrect Calculation in the Layer 2 Control Protocol Daemon (l2cpd). An unauthenticated, network-adjacent attacker can flap the management interface to disrupt MAC learning over label-switched interfaces (LSI). Impact described in t...

CVE-2026-21911 Junos OS Evolved: Flapping management interface causes MAC learning on label-switched interfaces to stop

An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon l2cpd of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over label-switched interfaces LSI to stop while...

CVE-2026-21911

An Incorrect Calculation vulnerability in the Layer 2 Control Protocol Daemon l2cpd of Juniper Networks Junos OS Evolved allows an unauthenticated network-adjacent attacker flapping the management interface to cause the learning of new MACs over label-switched interfaces LSI to stop while...

PT-2026-3125

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS Evolved versions prior to 21.4R3-S7-EVO Juniper Networks Junos OS Evolved versions 22.2 through 22.2R3-S4-EVO Juniper Networks Junos OS Evolved versions 22.3 through 22.3R3-S3-EVO Juniper Networks Junos OS Evolved...

Linux Distros Unpatched Vulnerability : CVE-2019-15753

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet floodin...

CVE-2024-47498

An Unimplemented or Unsupported Feature in UI vulnerability in the CLI of Juniper Networks Junos OS Evolved on QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service DoS. Several configuration statements meant to enforce limits on MAC learning and moves can be...

CVE-2024-47498 Junos OS Evolved: QFX5000 Series: Configured MAC learning and move limits are not in effect

An Unimplemented or Unsupported Feature in UI vulnerability in the CLI of Juniper Networks Junos OS Evolved on QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service DoS. Several configuration statements meant to enforce limits on MAC learning and moves can be...

CVE-2024-47498 Junos OS Evolved: QFX5000 Series: Configured MAC learning and move limits are not in effect

An Unimplemented or Unsupported Feature in UI vulnerability in the CLI of Juniper Networks Junos OS Evolved on QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial-of-Service DoS. Several configuration statements meant to enforce limits on MAC learning and moves can be...

CVE-2024-47498

CVE-2024-47498 affects Junos OS Evolved on QFX5000 Series. The issue is an unimplemented/unsupported feature in the UI of the CLI that, when configured, does not enforce limits on MAC learning/moves, potentially causing control-plane overload and a denial of service for legitimate traffic. The vu...

CVE-2024-30403

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS. When Layer 2 traffic is sent through a logical interface, MAC learning happens. If during this process,...

CVE-2024-30403

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS. When Layer 2 traffic is sent through a logical interface, MAC learning happens. If during this process,...

CVE-2024-30403

Summary of CVE-2024-30403 (Junos OS Evolved): A NULL pointer dereference in the Packet Forwarding Engine (PFE) allows an unauthenticated, adjacent attacker to cause a Denial of Service when MAC learning occurs on a logical interface and the interface flaps, triggering an evo-aftmand-bt core crash...

CVE-2024-30403 Junos OS Evolved: When MAC learning happens, and an interface gets flapped, the PFE crashes

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS. When Layer 2 traffic is sent through a logical interface, MAC learning happens. If during this process,...

CVE-2024-30403 Junos OS Evolved: When MAC learning happens, and an interface gets flapped, the PFE crashes

A NULL Pointer Dereference vulnerability in the Packet Forwarding Engine PFE of Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS. When Layer 2 traffic is sent through a logical interface, MAC learning happens. If during this process,...

PT-2024-4771 · Juniper Networks · Junos Evolved

Name of the Vulnerable Software and Affected Versions: Juniper Networks Junos OS Evolved versions prior to 23.2R1-S1-EVO Juniper Networks Junos OS Evolved version 23.2R2-EVO Description: A NULL Pointer Dereference issue in the Packet Forwarding Engine PFE of Juniper Networks Junos OS Evolved allo...

SUSE CVE-2019-15753

In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of non-local destinations, which both impedes network performance and allows users to possibly view the content of packets for instance...