MSRXCVE-2026-106931
CVE-2026-106931
EG Secure Solutions SiteGuard Server Edition OS Command Injection Vulnerability
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.
CVSS 4.0 · CNA · jpcert.or.jp
chance of exploitation in the next 30 days (EPSS; higher than 84% of CVEs)
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.
Scores
Affected products
- e-guardian siteguard: ≥ 2.20, < 8.00; ≥ 2.20, < 7.00; ≥ 2.20, < 3.10; ≥ 4.10, < 8.00; 11 specific releases listed in NVD
Weakness: CWE-78
3 references (advisories, patches, write-ups)
- https://jvn.jp/en/jp/JVN88474777/ · Third Party Advisory
- https://www.eg-secure.co.jp/siteguard/news/alert-202610-1 · Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-106931 · US Government Resource
Sources: NVD, CVE.org, FIRST EPSS. Missing ones did not answer or have no record yet.