Vulnerabilities found in Juniper Networks’ Junos OS and Junos OS Evolved

Juniper has identified several vulnerabilities in Junos OS and Junos OS Evolved, specifically related to devices in the MX Series, PTX Series, QFX Series, EX Series, SRX Series, and QFX10000 Series. These vulnerabilities affect various components of Junos OS and Junos OS Evolved, including the...

EUVD-2026-42708

An Out-of-bounds Write vulnerability in the http-gatekeeper http-gk of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. If an SRX Series device is configured for remote-access VPN with pre-logon compliance check, a...

CVE-2026-57021

An Out-of-bounds Write vulnerability in the http-gatekeeper http-gk of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. If an SRX Series device is configured for remote-access VPN with pre-logon compliance check, a...

CVE-2026-57021

An Out-of-bounds Write vulnerability in the http-gatekeeper http-gk of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. If an SRX Series device is configured for remote-access VPN with pre-logon compliance check, a...

CVE-2026-57021 Junos OS: SRX Series: If VPN compliance-check is configured an attacker can cause http-gk process crash

An Out-of-bounds Write vulnerability in the http-gatekeeper http-gk of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service DoS. If an SRX Series device is configured for remote-access VPN with pre-logon compliance check, a...

PT-2026-56975

Name of the Vulnerable Software and Affected Versions Junos OS on SRX Series versions prior to 23.2R2-S7 Junos OS on SRX Series versions prior to 23.4R2-S8 Junos OS on SRX Series versions prior to 24.2R2-S4 Junos OS on SRX Series versions prior to 24.4R2-S4 Junos OS on SRX Series versions prior t...