CVE-2026-106931SiteGuard 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…
Updated under an hour ago ()
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It affects EG Secure Solutions Inc. SiteGuard Server Edition for Apache httpd and 5 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Oct 20, 2026; federal agencies had to remediate by Oct 23, 2026. Treat that date as your deadline.
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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.
- CVSS
- 8.5 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-78
- Known exploited
- Added to CISA KEV Oct 20, 2026; federal remediation due Oct 23, 2026Apply 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.
- EPSS (exploitation in the next 30 days)
- 1.17% (percentile 67)
- Assigned by
- jpcert
- NVD analysis
- Analyzed
- Record last updated
- Oct 20, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
EG Secure Solutions Inc. SiteGuard Server Edition for Apache httpd eg_secure_solutions:siteguard_server_edition_for_apache_httpd (from the name) | from Ver2.20 before Ver8.00 Update 5 | CNA record |
EG Secure Solutions Inc. SiteGuard Server Edition for Nginx eg_secure_solutions:siteguard_server_edition_for_nginx (from the name) | from Ver2.20 before Ver8.00 Update 5 | CNA record |
EG Secure Solutions Inc. SiteGuard Server Edition for IIS eg_secure_solutions:siteguard_server_edition_for_iis (from the name) | from Ver2.20 before Ver8.00 Update 5; fixed at Ver3.10, affected at Ver4.00 Update 5 | CNA record |
EG Secure Solutions Inc. SiteGuard Server Edition for Apache httpd on FreeBSD eg_secure_solutions:siteguard_server_edition_for_apache_httpd_on_freebsd (from the name) | from Ver2.20 before Ver7.00 Update 6 | CNA record |
EG Secure Solutions Inc. SiteGuard Server Edition for Nginx on FreeBSD eg_secure_solutions:siteguard_server_edition_for_nginx_on_freebsd (from the name) | from Ver2.20 before Ver7.00 Update 6 | CNA record |
e-guardian siteguard e-guardian:siteguard | from 2.20 before 8.00; 8.00; 8.00; 8.00; 8.00; from 2.20 before 7.00; 7.00; 7.00; and 19 more ranges | NVD |
References
- https://www.eg-secure.co.jp/siteguard/news/alert-202610-1vendor-advisory
- https://jvn.jp/en/jp/JVN88474777/third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-106931us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.