Actively exploited · Published Oct 14, 2026 · Assigned by jpcert
CVE-2026-106931
High 7.8 Exploited
In plain English
A high-severity OS command injection in SiteGuard Server Edition for Apache httpd from EG Secure Solutions Inc.. Attackers are actively exploiting it in the wild (listed by CISA on October 20, 2026). The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities). 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 guidance
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.
Federal agencies must remediate by Oct 23, 2026.
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| EG Secure Solutions Inc. | SiteGuard Server Edition for Apache httpd | Ver2.20 – before Ver8.00 Update 5 |
| EG Secure Solutions Inc. | SiteGuard Server Edition for Nginx | Ver2.20 – before Ver8.00 Update 5 |
| EG Secure Solutions Inc. | SiteGuard Server Edition for IIS | Ver2.20 – before Ver8.00 Update 5 |
| EG Secure Solutions Inc. | SiteGuard Server Edition for Apache httpd on FreeBSD | Ver2.20 – before Ver7.00 Update 6 |
| EG Secure Solutions Inc. | SiteGuard Server Edition for Nginx on FreeBSD | Ver2.20 – before Ver7.00 Update 6 |
Weakness: CWE-78 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H