CVE-2026-106931OS Command Injection
Vulnerability Summary
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NShow CVSS v3.x metrics (score 7.8)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HAffected & Patched Versions
- EG Secure Solutions Inc. SiteGuard Server Edition for Apache httpd >= Ver2.20 and < Ver8.00 Update 5
- EG Secure Solutions Inc. SiteGuard Server Edition for Nginx >= Ver2.20 and < Ver8.00 Update 5
- EG Secure Solutions Inc. SiteGuard Server Edition for IIS >= Ver2.20 and < Ver8.00 Update 5
- EG Secure Solutions Inc. SiteGuard Server Edition for Apache httpd on FreeBSD >= Ver2.20 and < Ver7.00 Update 6
- EG Secure Solutions Inc. SiteGuard Server Edition for Nginx on FreeBSD >= Ver2.20 and < Ver7.00 Update 6
- EG Secure Solutions Inc. SiteGuard Server Edition for Apache httpd Ver8.00 Update 5
- EG Secure Solutions Inc. SiteGuard Server Edition for Nginx Ver8.00 Update 5
- EG Secure Solutions Inc. SiteGuard Server Edition for IIS Ver8.00 Update 5
- EG Secure Solutions Inc. SiteGuard Server Edition for Apache httpd on FreeBSD Ver7.00 Update 6
- EG Secure Solutions Inc. SiteGuard Server Edition for Nginx on FreeBSD Ver7.00 Update 6
What to do
Patch now. CISA lists this flaw as exploited in the wild and set a federal remediation deadline of Oct 23, 2026.
- Check whether you run the affected product and which version.
- Update to a patched version listed above, then confirm the new version.
- Review logs and exposed services for signs of earlier compromise.
CISA required action: 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.
CISA KEV Status
Remediation due: Oct 23, 2026 (deadline passed)
Timeline
- Oct 14, 2026Published
- Oct 20, 2026Added to CISA KEV catalog
- Oct 21, 2026Record last modified
- Oct 23, 2026KEV remediation due date
Score, severity and exploitation changes are tracked from the day Watchtower started logging them.
Related Coverage
- SiteGuard Server Edition Flaw CVE-2026-106931 Exploited in the Wild for Root Access
- Weekly CVE Report Flags PHP2Shell and FortiSIEM Attacks Still Missing From CISA KEV
- PHP Prepares Emergency Fix as Cloudflare Reports Early Attacks on Critical Flaws
- This Weekly CVE Report Finds CISA KEV Trailing Daily CyberSecurity by Up to 8 Days
External References
Data last checked: Nov 14, 2026 13:06 UTC