CVE Watchtower

CVE-2026-106931OS Command Injection

NVD

Vulnerability Summary

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.
Severity Level
HIGH(8.5)
Published Date
Oct 14, 2026
Last Modified
Oct 21, 2026
Exploitation Status
ACTIVE
EPSS Score (30-Day)
2.53%Probability
Root Weakness (CWE)
The software constructs all or part of an OS command using externally-influenced input, but does not properly neutralize special elements.
CVSS v4.0 Base Metrics — Score 8.5 (HIGH)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Attack VectorLocal
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredLow
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 7.8)
CVSS v3.0 Base Metrics — Score 7.8 (HIGH)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected 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
Patched Versions
  • 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.

  1. Check whether you run the affected product and which version.
  2. Update to a patched version listed above, then confirm the new version.
  3. 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

Listed in Known Exploited Vulnerabilities
Added: Oct 20, 2026
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.

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Data last checked: Nov 14, 2026 13:06 UTC