CVE-2018-0017: Juniper Junos

Medium severity, CVSS 6.5. EPSS: 1.9% chance of exploitation in the next 30 days.

A vulnerability in the Network Address Translation - Protocol Translation (NAT-PT) feature of Junos OS on SRX series devices may allow a certain valid IPv6 packet to crash the flowd daemon. Repeated crashes of the flowd daemon can result in an extended denial of service condition for the SRX device. Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D72; 12.3X48 versions prior to 12.3X48-D55; 15.1X49 versions prior to 15.1X49-D90.

Affected products

• Juniper Junos: from 12.1x46, up to and including 12.1x46\:d72; from 12.3x48, up to and including 12.3x48\:d55; from 15.1x49, up to and including 15.1x49\:d90

Published 2018-04-11. Last modified 2026-06-17.