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CVE-2026-57021
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2026-07-09T22:17:07.057 · Last modified 2026-07-09T22:17:07.057

Summary

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 network-based attacker sending specifically formatted requests can trigger an out of bounds write leading to an http-gk process crash. This crash leads to unavailability of all services depending on the [ system services web-management ] configuration (like J-Web, remote access VPN and firewall authentication) until the process automatically restarts. This issue affects Junos OS on SRX Series: * 23.2 versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.