# Attackers exploit SiteGuard firewall flaw to execute privileged commands

_Published Sunday, October 18, 2026 at 11:38 AM EDT · Security, Infrastructure · Latest · Tier 2 — Notable_

![Attackers exploit SiteGuard firewall flaw to execute privileged commands — Primary](https://www.bleepstatic.com/content/hl-images/2026/05/05/hacker.jpg)

Attackers are exploiting a command-injection flaw in SiteGuard Server Edition that lets them run commands with root or SYSTEM privileges, according to the vendor and Japan's CERT agency. Tracked as CVE-2026-106931, the vulnerability affects the firewall's statistics feature, which is enabled by default.

Affected versions start at 2.20, with fixes in 8.00 Update 5 for non-FreeBSD installations and 7.00 Update 6 for FreeBSD. JPCERT/CC says IIS editions 3.10 through 4.00 Update 4 are exempt. The vendor also offers replacement-file patches, including for end-of-life versions.

Administrators should preserve diagnostic information before remediation because patching may erase attack traces. The attackers, victims and scale of exploitation remain unclear.

## Sources

- [BleepingComputer](https://www.bleepingcomputer.com/news/security/hackers-exploit-siteguard-waf-flaw-to-run-commands-as-system-root/)

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Canonical: https://techandbusiness.org/newswire/fjxdHrzjRskVvrfi5H40Fw
Published: 2026-10-18T15:38:38.524Z
Story chronology: 2026-10-18T14:23:16.000Z
Retrieved: 2026-10-18T18:15:15.505Z
Publisher: Tech & Business (techandbusiness.org)