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{"bugzilla": {"description": "firefox: firefox-esr: Firefox: Arbitrary code execution via use-after-free in Audio/Video component", "id": "2526765", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526765"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Audio/Video component of Firefox and Firefox ESR. This use-after-free vulnerability could allow a remote attacker to achieve arbitrary code execution. A use-after-free occurs when a program attempts to use memory that has been deallocated, which can lead to memory corruption and unexpected program behavior. This could enable an attacker to take control of the affected system."], "name": "CVE-2026-84120", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-09-01T12:18:40Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-84120\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-84120\nhttps://bugzilla.mozilla.org/show_bug.cgi?id=2058911\nhttps://www.mozilla.org/security/advisories/mfsa2026-82/\nhttps://www.mozilla.org/security/advisories/mfsa2026-83/\nhttps://www.mozilla.org/security/advisories/mfsa2026-84/\nhttps://www.mozilla.org/security/advisories/mfsa2026-85/"], "threat_severity": "Important"}

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