KEV Entry

CVE-2024-20439

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2024-20439

2026-06-30 00:00 UTC

Characteristics

98.0

Timestamps

2025-08-02

2025-08-02

2026-06-30

Scope

Affected: Cisco / Cisco Smart Licensing Utility (CSLU) | Class: other-software | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: yes | Honeypot connections on 2026-06-30: 1

References
  • {'id': 'CVE-2024-20439', 'url': 'https://www.cve.org/CVERecord?id=CVE-2024-20439'}
  • {'id': 'shadowserver', 'url': 'https://www.shadowserver.org/what-we-do/network-reporting/honeypot-exploited-vulnerabilities-report/'}

74c4ae7e-9608-42a5-b866-e741b89ce7a9

c8fb6bf1-f81f-4cb8-95b1-eadbb3b54ee8

2026-06-30 09:22 UTC

2026-07-01 05:21 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
honeypot shadowserver in_the_wild_attempts 0.70
View details 
{
  "1d": "1",
  "30d_avg": 6,
  "7d_avg": 1,
  "90d_avg": 2,
  "cisa_kev": "yes",
  "class": "other-software",
  "connections": 1,
  "feed": "Shadowserver Foundation honeypot/exploited-vulnerabilities",
  "iot": "no",
  "observation_date": "2026-06-30",
  "product": "Cisco Smart Licensing Utility (CSLU)",
  "type": "http-scan",
  "vendor": "Cisco",
  "vulnerability_class": "CVSS",
  "vulnerability_score": 9.8,
  "vulnerability_severity": "Critical"
}
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