CVE-2026-106931
SiteGuard Server Edition contains an OS command injection vulnerability, which may allow an attacker to execute arbitrary OS commands with…
- 8.5HighCVSS base score
- 2.5%Exploitation in 30 daysEPSS · top 15% of all CVEs
- YesKnown exploitedin CISA's KEV since 20 Oct 2026
- YesPublic exploitsa reference or SSVC says so
Description
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.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as EG Secure Solutions SiteGuard Server Edition OS Command Injection Vulnerability.
- Added
- 20 Oct 2026
- Fix due (US federal)
- 23 Oct 2026
- Used by ransomware
- Not known
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.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 20 Oct 2026.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. CISA's SSVC rates its exploitation: it is being exploited.
Timeline
ID reserved
By jpcert
- 7 days later
· 7 days later
Published
- 6 days later
· 6 days later
Added to CISA KEV
Known exploited in the wild
- 1 day later
· 1 day later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| jpcertCNA (assigner) | 4.0 | High8.5 | 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 |
| jpcertCNA (assigner) | 3.0 | High7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Analyzed | 4.0 | High8.5 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% of all CVEs (9 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.5.
Affected products
EG Secure Solutions Inc. · SiteGuard Server Edition for Apache httpd
- affected Ver2.20 – < Ver8.00 Update 5
EG Secure Solutions Inc. · SiteGuard Server Edition for Nginx
- affected Ver2.20 – < Ver8.00 Update 5
EG Secure Solutions Inc. · SiteGuard Server Edition for IIS
- affected Ver2.20 – < Ver8.00 Update 5
EG Secure Solutions Inc. · SiteGuard Server Edition for Apache httpd on FreeBSD
- affected Ver2.20 – < Ver7.00 Update 6
EG Secure Solutions Inc. · SiteGuard Server Edition for Nginx on FreeBSD
- affected Ver2.20 – < Ver7.00 Update 6
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-100814 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-106931)Record last updated .