{"cve":"CVE-2018-12249","nvd":{"published":"2018-06-12T14:29:00.460","modified":"2026-06-17T01:37:25.673","status":"Modified","description":"An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class_real because \"class BasicObject\" is not properly supported in class.c.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-476"],"references":["https://github.com/mruby/mruby/commit/faa4eaf6803bd11669bc324b4c34e7162286bfa3","https://github.com/mruby/mruby/issues/4037","https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html","https://github.com/mruby/mruby/commit/faa4eaf6803bd11669bc324b4c34e7162286bfa3","https://github.com/mruby/mruby/issues/4037"],"products":["debian:debian_linux","mruby:mruby"],"source":"nvd","synced_at":"2026-10-19T20:51:47.459859389+00:00"},"epss":{"cve":"CVE-2018-12249","score":0.02086,"percentile":0.81577,"date":"2026-10-31"},"kev":null,"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."]}