VULNERABILITY INTELLIGENCE
CVE-2018-6789
CVSS score9.8 CRITICAL
EPSS probability82.14%
CISA KEVKnown exploited vulnerability
Published2018-02-08
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Known Exploited Vulnerability
Exim Buffer Overflow Vulnerability
Vendor / product: Exim / Exim
Description
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 happen. This can be used to execute code remotely.
Weakness classification
- CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Primary references
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Exploit, Third Party Advisory, VDB Entry
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Broken Link, Third Party Advisory, VDB Entry
- cve@mitre.org — Broken Link, Third Party Advisory, VDB Entry
- cve@mitre.org — Exploit, Third Party Advisory
- cve@mitre.org — Vendor Advisory
- cve@mitre.org — Patch
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Exploit, Third Party Advisory, VDB Entry