ConfigServer CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

CRITICAL ConfigServer CVE published 2026-09-10

CVE-2026-65638

A critical vulnerability was found in the MESSENGER service of ConfigServer Security & Firewall (CSF) software. This vulnerability allows an unauthenticated remote attacker to execute arbitrary commands as the CSF service account. The MESSENGER service is disabled by default, and exploitation requires it to be enabled along with a reCAPTCHA secret configured. The affected versions are CSF 14.00 through 16 [truncated]