KEV Entry

CVE-2018-6789

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2018-6789

2021-11-03 00:00 UTC

Timestamps

2021-11-03

2021-11-03

Scope

KEVIntel entry: An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may... | Affected: Exim / Exim | CVSS: 9.8 (CRITICAL) | Used in malware: yes | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2018-6789', 'url': 'https://www.cve.org/CVERecord?id=CVE-2018-6789'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2018-6789'}

07e2edd6-aadb-4373-bb09-8a85742f13c3

caeb2787-0d58-4236-9039-7c86c3e566f3

2026-06-23 14:04 UTC

2026-06-23 14:04 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel confirmed_compromise 0.70
View details 
{
  "added_date": "2021-11-03T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cvss_score": 9.8,
  "cvss_severity": "CRITICAL",
  "epss_percentile": null,
  "epss_score": null,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": false,
  "product": "Exim",
  "title": "An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may...",
  "used_in_malware": "yes",
  "vendor": "Exim"
}
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