CVE-2026-106931: EG Secure Solutions SiteGuard Server Edition OS Command Injection Vulnerability

Affected versions

Product	Affected versions	Fixed in
E-Guardian Siteguard	from 2.20 before 7.00	7.00
E-Guardian Siteguard	from 2.20 before 8.00	8.00
E-Guardian Siteguard	from 2.20 before 3.10	3.10
E-Guardian Siteguard	from 4.10 before 8.00	8.00
E-Guardian Siteguard	from 2.20 before 7.00	7.00
E-Guardian Siteguard	from 2.20 before 8.00	8.00
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	7.00	–
E-Guardian Siteguard	8.00	–
E-Guardian Siteguard	8.00	–

+7 more

Required action (CISA's text)

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Description (NVD)

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.

SOURCES

• NVDNVD entry for CVE-2026-106931
• CISA KEVCISA Known Exploited Vulnerabilities catalog
• VENDORwww.eg-secure.co.jp/siteguard/news/alert-202610-1

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 21 Oct 2026.