KEV Entry

CVE-2021-21311

Known Exploited Vulnerability Entry Shadowserver

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Entry Details
Confirmed Exploited

CVE-2021-21311

2026-10-20 00:00 UTC

Characteristics

72.0

Timestamps

2026-09-21

2026-09-21

2026-10-20

Scope

Affected: Adminer / Adminer | Class: other-software | Severity: High (CVSS 7.2) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-10-20: 78

References
  • {'id': 'CVE-2021-21311', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-21311'}
  • {'id': 'shadowserver', 'url': 'https://www.shadowserver.org/what-we-do/network-reporting/honeypot-exploited-vulnerabilities-report/'}

edb8bbe7-edd2-4ed7-bf74-098b2452d4ae

Shadowserver
c8fb6bf1-f81f-4cb8-95b1-eadbb3b54ee8

2026-10-21 09:12 UTC

2026-10-22 01:00 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
honeypot shadowserver in_the_wild_attempts 0.70
View details 
{
  "1d": "5",
  "30d_avg": 1,
  "7d_avg": 1,
  "90d_avg": 0,
  "cisa_kev": "yes",
  "class": "other-software",
  "connections": 78,
  "feed": "Shadowserver Foundation honeypot/exploited-vulnerabilities",
  "iot": "no",
  "observation_date": "2026-10-20",
  "product": "Adminer",
  "type": "http-scan",
  "vendor": "Adminer",
  "vulnerability_class": "CVSS",
  "vulnerability_score": 7.2,
  "vulnerability_severity": "High"
}
 -
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