CVE-2021-36380 (GCVE-0-2021-36380)

Vulnerability from cvelistv5 – Published: 2021-08-13 15:53 – Updated: 2025-10-21 23:25
VLAI CISA Previdian
Summary
Sunhillo SureLine before 8.7.0.1.1 allows Unauthenticated OS Command Injection via shell metacharacters in ipAddr or dnsAddr /cgi/networkDiag.cgi.
SSVC
Exploitation: active Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-03-05 05:00 UTC
CWE
  • n/a
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Impacted products
Vendor Product Version
sunhillo sureline Affected: 0 , < 8.7.0.1.1 (custom)
    cpe:2.3:a:sunhillo:sureline:*:*:*:*:*:*:*:*
Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2021-36380

Status: Confirmed

Status Updated: 2024-03-05 01:00 CET

Exploited: Yes


Timestamps
First Seen: 2024-03-05
Asserted: 2024-03-05

Scope
Notes: Sunhillo SureLine OS Command Injection Vulnerablity | Affected: Sunhillo / SureLine | Description: Sunhillo SureLine contains an OS command injection vulnerability that allows an attacker to cause a denial-of-service or utilize the device for persistence on the network via shell metacharacters in ipAddr or dnsAddr in /cgi/networkDiag.cgi. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2024-03-26 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://www.sunhillo.com/fb011/; https://nvd.nist.gov/vuln/detail/CVE-2021-36380

Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev


Details
Cwes CWE-78
Feed CISA Known Exploited Vulnerabilities Catalog
Product SureLine
Due Date 2024-03-26
Date Added 2024-03-05
Vendorproject Sunhillo
Vulnerabilityname Sunhillo SureLine OS Command Injection Vulnerablity
Knownransomwarecampaignuse Unknown

References

Created: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant

Vulnerability ID: CVE-2021-36380

Status: Confirmed

Status Updated: 2024-03-05 01:00 CET

Exploited: Yes


Timestamps
First Seen: 2024-03-05
Asserted: 2024-03-05

Scope
Notes: Sunhillo SureLine before 8.7.0.1.1 allows Unauthenticated OS Command Injection via shell metacharacters in ipAddr or dnsAddr /cgi/networkDiag.cgi. | Affected: Sunhillo / SureLine | CVSS: 9.8 (CRITICAL) | EPSS: 0.97647 | Used in malware: unknown | Not yet in CISA KEV: False

Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian


Details
Feed Previdian (previdian.com)
Title Sunhillo SureLine before 8.7.0.1.1 allows Unauthenticated OS Command Injection via shell metacharacters in ipAddr or dnsAddr /cgi/networkDiag.cgi.
Cve Id CVE-2021-36380
Vendor Sunhillo
Ghsa Id None
Product SureLine
Added Date 2024-03-05T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.97647
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99902
Used In Malware unknown
Vulnerability Id CVE-2021-36380
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False

References

Created: 2026-10-02 09:11 CEST | Updated: 2026-10-02 09:11 CEST
Show details on NVD website

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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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