Critical SiteGuard WAF flaw allows command injection
🛡️ A critical OS command-injection vulnerability (CVE-2026-106931) in the statistics feature of SiteGuard Server Edition is being actively exploited, enabling remote attackers to execute commands as root or SYSTEM. The flaw affects multiple SiteGuard Server Edition builds for Apache, Nginx, and IIS (with specific FreeBSD and version exceptions) when the statistics function is enabled by default. SiteGuard and JPCERT/CC urge immediate remediation; the vendor provides updates and a replacement-file patch for legacy instances and warns that applying fixes may remove forensic evidence, so administrators should download diagnostic information first. Customers with direct support were informed on September 29.