What’s Vulnerable › Vulnerabilities

CVE-2021-36380: Sunhillo SureLine OS Command Injection Vulnerablity

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2024-03-05
• EPSS: 97.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-13 · updated 2026-06-17
• Weakness: CWE-78

Description

Sunhillo SureLine before 8.7.0.1.1 allows Unauthenticated OS Command Injection via shell metacharacters in ipAddr or dnsAddr /cgi/networkDiag.cgi.

Affected products

• Sunhillo Sureline: before 8.7.0.1.1 — fixed in 8.7.0.1.1

How to fix

Upgrade to a fixed version: Sunhillo Sureline 8.7.0.1.1. Check the vendor advisory for mitigations.

References

• https://research.nccgroup.com/2021/07/26/technical-advisory-sunhillo-sureline-unauthenticated-os-command-injection-cve-2021-36380/
• https://www.sunhillo.com/product/sureline/
• https://research.nccgroup.com/2021/07/26/technical-advisory-sunhillo-sureline-unauthenticated-os-command-injection-cve-2021-36380/
• https://www.sunhillo.com/product/sureline/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36380

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