CVE-2013-4686: Juniper Junos

High severity, CVSS 7.1. EPSS: 2.3% chance of exploitation in the next 30 days.

The kernel in Juniper Junos 10.4 before 10.4R14, 11.4 before 11.4R8, 11.4X27 before 11.4X27.43, 12.1 before 12.1R6, 12.1X44 before 12.1X44-D20, 12.2 before 12.2R4, and 12.3 before 12.3R2, in certain VLAN configurations with unrestricted arp-resp and proxy-arp settings, allows remote attackers to cause a denial of service (device crash) via a crafted ARP request, aka PR 842091.

Affected products

• Juniper Junos: version 10.4 only; version 11.4 only; version 11.4x27 only; version 12.1 only; version 12.1x44 only; version 12.2 only; …

Published 2013-07-11. Last modified 2026-06-16.