{"cve":"CVE-2020-12389","nvd":{"published":"2020-05-26T18:15:11.153","modified":"2026-06-17T02:51:44.553","status":"Modified","description":"The Firefox content processes did not sufficiently lockdown access control which could result in a sandbox escape. *Note: this issue only affects Firefox on Windows operating systems.*. This vulnerability affects Firefox ESR < 68.8 and Firefox < 76.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10.0},"cwes":["CWE-20"],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1554110","https://www.mozilla.org/security/advisories/mfsa2020-16/","https://www.mozilla.org/security/advisories/mfsa2020-17/","https://bugzilla.mozilla.org/show_bug.cgi?id=1554110","https://www.mozilla.org/security/advisories/mfsa2020-16/"],"products":["mozilla:firefox","mozilla:firefox_esr"],"source":"nvd","synced_at":"2026-10-19T21:05:42.039641217+00:00"},"epss":{"cve":"CVE-2020-12389","score":0.01723,"percentile":0.77516,"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."]}