{"cve":"CVE-2018-6789","nvd":{"published":"2018-02-08T23:29:01.170","modified":"2026-06-17T02:02:17.180","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-120"],"references":["http://openwall.com/lists/oss-security/2018/02/10/2","http://packetstormsecurity.com/files/162959/Exim-base64d-Buffer-Overflow.html","http://www.openwall.com/lists/oss-security/2018/02/07/2","http://www.securityfocus.com/bid/103049","http://www.securitytracker.com/id/1040461"],"products":["canonical:ubuntu_linux","debian:debian_linux","exim:exim"],"source":"nvd","synced_at":"2026-10-19T20:48:34.567387330+00:00"},"epss":{"cve":"CVE-2018-6789","score":0.82137,"percentile":0.99655,"date":"2026-10-31"},"kev":{"cve":"CVE-2018-6789","date_added":"2021-11-03","due_date":"2022-05-03","vendor":"Exim","product":"Exim","known_ransomware":true},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}