CVE-2026-106931

SiteGuard Server Edition command injection, confirmed exploited in the wild.

EG Secure Solutions 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.

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2.5%chance of exploitation in the next 30 days (EPSS), 85th percentile

20 Octadded to CISA's Known Exploited Vulnerabilities list, 2026

23 Octfederal remediation deadline, already passed

Passedpast the deadline: patch now

CISA's name for it	EG Secure Solutions SiteGuard Server Edition OS Command Injection Vulnerability
Vendor and product	EG Secure Solutions · SiteGuard Server Edition
Type	command injection · CWE-78
Exploited	Confirmed by CISA listed 20 October 2026
Likelihood	more likely to be exploited than most
Deadline	23 October 2026 · already passed
Used in ransomware	Not reported
Advisories	www.eg-secure.co.jp ↗ · www.cisa.gov ↗ · www.cisa.gov ↗ · nvd.nist.gov ↗

What to do

Three steps, in this order

Step 1

Apply the vendor fix; command injection on an exposed device is used within days of disclosure.

Step 2

Restrict the management interface to a trusted network until the fix is in.

Step 3

Review the device's logs and configuration for changes you did not make.

CISA's 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's 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.

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Questions

CVE-2026-106931 in short

Is CVE-2026-106931 being exploited?

Yes. CISA added CVE-2026-106931 to its Known Exploited Vulnerabilities catalogue on 20 October 2026, which it does only on evidence of exploitation in the wild.

What is the CISA deadline for CVE-2026-106931?

US federal agencies must remediate it by 23 October 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.

How likely is CVE-2026-106931 to be exploited in the next 30 days?

FIRST's Exploit Prediction Scoring System gives it 2.5%, the 85th percentile of every CVE it scores.

How do I fix CVE-2026-106931?

Apply the vendor fix; command injection on an exposed device is used within days of disclosure. Restrict the management interface to a trusted network until the fix is in. Review the device's logs and configuration for changes you did not make.

Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.