Home/CVE/Sunhillo SureLine OS Command Injection Vulnerablity
CVE

CVE-2021-36380

Sunhillo SureLine OS Command Injection Vulnerablity

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

CRITICAL · CVSS 9.8 ⚠ CISA KEV EPSS 0.93643
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

⬡

Weakness Classification

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
▤

Affected Products & Versions

1
sunhillo sureline< 8.7.0.1.1
⚠

Public Exploits & PoCs

2
nucleiSunhillo SureLine <8.7.0.1.1 - Unauthenticated OS Command Injectioncritical
pocresearch.nccgroup.com · technical-advisory-sunhillo-sureline-unauthenticated-os-c...research.nccgroup.com
◈

Detection Rules (IDS/IPS)

1
et-openET EXPLOIT Sunhillo SureLine Unauthenticated OS Command Injection Inbound (CVE-2021-36380)attempted-admin
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Aug 2021 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisaKEV-CVE-2021-36380
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.sunhillo.com/product/sureline/Product
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36380US Government Resource
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