{"cve":"CVE-2016-2821","nvd":{"published":"2016-06-13T10:59:04.370","modified":"2026-06-17T00:44:31.637","status":"Modified","description":"Use-after-free vulnerability in the mozilla::dom::Element class in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2, when contenteditable mode is enabled, allows remote attackers to execute arbitrary code or cause a denial of service (heap memory corruption) by triggering deletion of DOM elements that were created in the editor.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","score":7.5},"cwes":[],"references":["http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00014.html","http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00016.html","http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00055.html","http://www.debian.org/security/2016/dsa-3600","http://www.mozilla.org/security/announce/2016/mfsa2016-51.html"],"products":["canonical:ubuntu_linux","debian:debian_linux","mozilla:firefox","opensuse:leap","opensuse:opensuse"],"source":"nvd","synced_at":"2026-10-19T20:38:51.654415212+00:00"},"epss":{"cve":"CVE-2016-2821","score":0.02771,"percentile":0.86329,"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."]}