Rising fast KEV catalog
CVE-2026-106931

EG Secure Solutions SiteGuard Server Edition OS Command Injection Vulnerability

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.

CheckOps priority index
4.7/10 Patch within 7 days
Severity8.5
Probability0.3
Exploitation2/5

Severity = CVSS. Probability = EPSS (FIRST). Exploitation = public signals: KEV, EUVD, ransomware, EPSS above 10 %, no account required.

EPSS · today 2.5% higher than 84.9% of CVEs
CVSS 4.0 8.5 AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/
Exploited for 14 days 20 Oct 2026
CISA due date 23 Oct 2026 for US federal agencies

Exploitation probability EPSS · FIRST

05010014 Oct19 Oct24 Oct28 Oct02 Nov
EPSS probability (%)Percentile among all CVEs

Exploitation signals 2 / 5

  • KEV catalog (CISA)20 Oct 2026
  • Exploited in EUVD (ENISA)20 Oct 2026
  • Used by ransomwareno
  • EPSS above 10 %2.5%
  • No account, over the networkno

What to do

Fix

Apply the vendor’s fix as soon as it is available.

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.

Meanwhile

Take the service off the internet or restrict access to it, watch the logs and look for signs of compromise.

Manufacturers (CRA)

Exploited vulnerability in your product: early warning to ENISA within 24 h, then notification within 72 h (Article 14 of the Cyber Resilience Act). The CRA explained

Affected products

SiteGuard Server Edition for NginxSiteGuard Server Edition for Apache httpdSiteGuard Server Edition for Nginx on FreeBSDSiteGuard Server Edition for IISSiteGuard Server Edition for Apache httpd on FreeBSDSiteGuard Server Edition
Affected versions
  • Ver2.20 <Ver8.00 Update 5
  • Ver2.20 <Ver7.00 Update 6
Weaknesses (CWE)

Open source packages OSV

Affected libraries according to OSV, with fixed versions.

Timeline

  1. Published

  2. Exploitation reported (ENISA)

  3. Added to the KEV catalog

  4. CISA remediation due date

References

Are you affected?

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Sources: CISA KEV · ENISA EUVD · FIRST EPSS · OSV. Public data aggregated by CheckOps, updated automatically. Source texts remain the property of their authors. All exploited vulnerabilities