CVE-2025-14330

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{"bugzilla": {"description": "firefox: JIT miscompilation in the JavaScript Engine: JIT component", "id": "2420516", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2420516"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-14330", "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:10", "fix_state": "Affected", "package_name": "rhel10/firefox-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"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": "2025-12-09T13:38:05Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-14330\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-14330\nhttps://www.mozilla.org/security/advisories/mfsa2025-94/#CVE-2025-14330"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Moderate"}

{"analysis": {"en": {"generated_at": "2026-04-20T21:32:34.331340+00:00", "value": {"mitigation_remediation": ["Upgrade Firefox to 146 or newer (or ESR\u202f140.6 or newer) and Thunderbird to 146 or newer (or ESR\u202f140.6 or newer).", "If an upgrade is not possible at the moment, disable the JIT compiler through enterprise configuration or command\u2011line flags to mitigate the miscompilation risk until a point release is applied.", "Apply a strict Content Security Policy that blocks JavaScript from untrusted origins to reduce the chance that a malicious payload can execute in the compromised JIT context."], "summary": {"action": "Patch Immediately", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Mozilla Firefox and Thunderbird are affected. The flaw was fixed in Firefox 146 and Firefox ESR 140.6, and in Thunderbird 146 and Thunderbird ESR 140.6; earlier releases before these versions contain the vulnerability.", "description_and_impact": "JIT miscompilation in the JavaScript Engine: JIT component allows the Just\u2011In\u2011Time compiler to produce incorrect machine code, which can corrupt application memory. The corruption can potentially enable a malicious actor to execute arbitrary code within the browser or its extensions. The weakness involves improper memory handling (CWE\u2011119), erroneous computation (CWE\u2011686), and data type confusion (CWE\u2011843).", "risk_and_exploitability": "The CVSS base score of\u202f9.8 indicates critical severity. The EPSS score of\u202f<\u202f1\u202f% indicates that widespread exploitation has not yet been observed. Based on the description, the likely attack vector is a malicious JavaScript payload served from an untrusted web page or resource, allowing the miscompilation to be triggered remotely. The vulnerability is not listed in CISA\u2019s KEV catalog, so no public exploits are known, but a zero\u2011day exploitation remains a possibility until the affected builds are updated."}}}}, "created": "2025-12-10T17:51:38.292590+00:00", "updated": "2026-04-20T21:45:18.954749+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox", "mozilla$PRODUCT$firefox_esr"]}