OS command injection in SiteGuard Server Edition
CISA: EG Secure Solutions SiteGuard Server Edition OS Command Injection Vulnerability
SiteGuard Server Edition has an OS command injection flaw (CWE-78) that lets an attacker run arbitrary operating-system commands. The published CVSS 4.0 vector rates the attack as local, low complexity, and requiring only low privileges, with no user interaction, and with high impact to confidentiality, integrity, and availability on the host. Successful exploitation can yield command execution as root on Unix-like systems or as SYSTEM on Windows. The product is a host-based web application firewall, so affected systems are servers where SiteGuard Server Edition is installed; specific version ranges are not given in the advisory data. It is not listed in CISA KEV, and no public proof-of-concept is known.
What to do: Treat this as a local privilege-escalation issue: apply the vendor's SiteGuard Server Edition security update as soon as a fixed build is published, and until then limit who can run or interact with the product to trusted administrators. Review local accounts and host logs for unexpected OS command execution under the SiteGuard process, and do not expose management or shell access on the host more broadly than necessary.
| EG Secure Solutions SiteGuard Server Edition | — |
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
SiteGuard Server Edition contains an OS command injection vulnerability, which may allow an attacker to execute arbitrary OS commands with root or SYSTEM privileges on the system running the affected product.
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Attackers are exploiting SiteGuard WAF flaw CVE-2026-106931 to run commands as root or SYSTEM.
Attackers are exploiting CVE-2026-106931, a critical OS command-injection flaw in SiteGuard Server Edition's statistics function, which is enabled by default. Successful attacks can run commands as root or SYSTEM on vulnerable Apache, Nginx, and IIS installations. SiteGuard, which says it protects more than 1.5 million websites, and JPCERT/CC confirm abuse, though attacker identity, victims, and scale are unknown. Fixed releases and a file-replacement patch are available, and administrators are told to save diagnostic information before remediation.
EG Secure Solutions has warned that a flaw in SiteGuard Server Edition is being exploited and that applying a fix could remove signs of an earlier attack. The issue, CVE-2026-106931, affects the product’s statistics feature, which is enabled by default. Before updating, administrators should save diagnostic information so they can check whether the server was already compromised. SiteGuard Server…
Attackers are exploiting vulnerability CVE-2026-106931 in SiteGuard Server Edition to run commands as root or SYSTEM. EG Secure Solutions published an urgent alert warning of CVE-2026-106931, an OS command injection bug in SiteGuard Server Edition. Threat actors are already exploiting it in the wild. A successful exploit lets them run commands with root or SYSTEM privileges on the server where…
Hackers are exploiting a command injection flaw in SiteGuard Server Edition, a web application firewall installed directly on protected servers. Tracked as CVE-2026-106931, the vulnerability could let attackers run operating system commands with root or SYSTEM privileges, potentially giving them full control of an affected server. The flaw affects the product’s statistics function, which is…