KEV Entry

CVE-2021-39509

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-39509

2024-10-09 03:25 UTC

Characteristics

98.0

Timestamps

2024-10-09

2024-10-09

2024-10-09

Scope

Affected: D-Link / D-Link DIR-816/DIR-816A2 | Class: router | Severity: Critical (CVSS 9.8) | IoT: yes | In CISA KEV: no | Honeypot connections on 2024-10-09: 81

References
  • {'id': 'CVE-2021-39509', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-39509'}
  • {'id': 'shadowserver', 'url': 'https://www.shadowserver.org/what-we-do/network-reporting/honeypot-exploited-vulnerabilities-report/'}

1f6db9c8-2535-4030-a2a7-b014da1325b8

c8fb6bf1-f81f-4cb8-95b1-eadbb3b54ee8

2026-07-01 09:12 UTC

2026-07-01 13:16 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
honeypot shadowserver in_the_wild_attempts 0.70
View details 
{
  "1d": "1",
  "30d_avg": 0,
  "7d_avg": 0,
  "90d_avg": 0,
  "cisa_kev": "no",
  "class": "router",
  "connections": 81,
  "feed": "Shadowserver Foundation honeypot/exploited-vulnerabilities",
  "iot": "yes",
  "observation_date": "2024-10-09",
  "product": "D-Link DIR-816/DIR-816A2",
  "type": "http-scan",
  "vendor": "D-Link",
  "vulnerability_class": "CVSS",
  "vulnerability_score": 9.8,
  "vulnerability_severity": "Critical"
}
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