KEV Entry

CVE-2021-36580

Known Exploited Vulnerability Entry Shadowserver

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Entry Details
Confirmed Exploited

CVE-2021-36580

2026-10-09 00:00 UTC

Characteristics

61.0

Timestamps

2026-10-01

2026-10-01

2026-10-09

Scope

Affected: IceWarp / IceWarp Mail Server | Class: email | Severity: Medium (CVSS 6.1) | IoT: no | In CISA KEV: no | Honeypot connections on 2026-10-09: 1

References
  • {'id': 'CVE-2021-36580', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-36580'}
  • {'id': 'shadowserver', 'url': 'https://www.shadowserver.org/what-we-do/network-reporting/honeypot-exploited-vulnerabilities-report/'}

a47c0010-4ccb-48bb-a67b-3825aa577215

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

2026-10-21 09:13 UTC

2026-10-21 09:13 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": "email",
  "connections": 1,
  "feed": "Shadowserver Foundation honeypot/exploited-vulnerabilities",
  "iot": "no",
  "observation_date": "2026-10-09",
  "product": "IceWarp Mail Server",
  "type": "http-scan",
  "vendor": "IceWarp",
  "vulnerability_class": "CVSS",
  "vulnerability_score": 6.1,
  "vulnerability_severity": "Medium"
}
 -
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