Hackers exploit SiteGuard WAF flaw to run commands as SYSTEM, root
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Hackers are actively exploiting a critical OS command-injection vulnerability, CVE-2026-106931, in the SiteGuard Server Edition web application firewall (WAF). The flaw exists in the statistics feature, which is enabled by default, and allows attackers to execute arbitrary commands with root or SYSTEM privileges on affected systems. The vulnerability impacts multiple versions of SiteGuard Server Edition for Apache httpd, Nginx, and IIS, excluding FreeBSD, prior to 8.00 Update 5, and FreeBSD versions before 7.00 Update 6. Exploitation in the wild has been confirmed, though details about the threat actors, victims, or attack scope remain undisclosed.
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