CVE-2019-0054: Juniper Junos

High severity, CVSS 7.4. EPSS: 0.6% chance of exploitation in the next 30 days.

An Improper Certificate Validation weakness in the SRX Series Application Identification (app-id) signature update client of Juniper Networks Junos OS allows an attacker to perform Man-in-the-Middle (MitM) attacks which may compromise the integrity and confidentiality of the device. This issue affects: Juniper Networks Junos OS 15.1X49 versions prior to 15.1X49-D120 on SRX Series devices. No other versions of Junos OS are affected.

Affected products

• Juniper Junos: version 15.1x49 only

Published 2019-10-09. Last modified 2026-06-17.