Cyberkendra OS Command Injection Flaw in SiteGuard WAF Exploited
Article Content
- •CVE-2026-106931 allows remote command execution with root privileges.
- •The vulnerability affects SiteGuard Server Edition versions 2.20 and later.
- •JPCERT/CC issued an emergency alert due to confirmed exploitation in the wild.
EG Secure Solutions disclosed that attackers are exploiting an OS command injection vulnerability in SiteGuard Server Edition, tracked as CVE-2026-106931. This flaw allows attackers to execute commands with root or SYSTEM privileges, affecting versions 2.20 and later, with the statistics feature enabled by default. The vulnerability has a CVSS v4 score of 8.5 and has been confirmed to be exploited in the wild. JPCERT/CC issued an emergency alert, noting the WAF's widespread deployment in Japan. Affected organizations are advised to apply patches or disable the statistics feature to mitigate risks. The vendor has provided a patch for supported versions and a workaround for end-of-life versions. Administrators are warned that patching may erase traces of an intrusion, and they should collect diagnostic data before applying fixes.
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