KEV Entry

CVE-2021-28150

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-28150

2026-06-21 00:00 UTC

Characteristics

55.0

Timestamps

2025-08-23

2025-08-23

2026-06-21

Scope

Affected: Hongdian / Hongdian H8922 | Class: router | Severity: Medium (CVSS 5.5) | IoT: yes | In CISA KEV: no | Honeypot connections on 2026-06-21: 26

References
  • {'id': 'CVE-2021-28150', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-28150'}
  • {'id': 'shadowserver', 'url': 'https://www.shadowserver.org/what-we-do/network-reporting/honeypot-exploited-vulnerabilities-report/'}

f39cebea-d82f-4bc6-9cbb-462e8896437c

c8fb6bf1-f81f-4cb8-95b1-eadbb3b54ee8

2026-07-01 05:54 UTC

2026-07-01 12:45 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
honeypot shadowserver in_the_wild_attempts 0.70
View details 
{
  "1d": "2",
  "30d_avg": 0,
  "7d_avg": 1,
  "90d_avg": 0,
  "cisa_kev": "no",
  "class": "router",
  "connections": 26,
  "feed": "Shadowserver Foundation honeypot/exploited-vulnerabilities",
  "iot": "yes",
  "observation_date": "2026-06-21",
  "product": "Hongdian H8922",
  "type": "http-scan",
  "vendor": "Hongdian",
  "vulnerability_class": "CVSS",
  "vulnerability_score": 5.5,
  "vulnerability_severity": "Medium"
}
 -
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