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{}

{"affected": [{"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[115.35,116.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[140.10,141.0.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[150,*]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Firefox", "source": "cna", "vendor": "Mozilla"}, "product": "firefox", "vendor": "mozilla"}], "analysis": {"en": {"generated_at": "2026-04-22T03:19:22.191291+00:00", "value": {"mitigation_remediation": ["Upgrade to Firefox\u00a0150 or newer, or to ESR\u00a0115.35 /\u00a0140.10, where the WebRTC boundary checks are fixed.", "If upgrade cannot be performed immediately, disable WebRTC by setting `media.peerconnection.enabled` to false in about:config or using a privacy\u2011shielding extension.", "Additionally, block or restrict `getUserMedia` through browser settings or extensions to prevent malicious media access.", "Monitor Mozilla security advisories for any updates or constituent patches."], "summary": {"action": "Patch", "impact": "Potential Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Affected versions are all Mozilla Firefox releases older than 150, including the ESR branches before 115.35 and 140.10. The vulnerability touches the WebRTC component used by browsers in normal web\u2011view contexts.", "description_and_impact": "The flaw arises from improper boundary checks in the WebRTC stack of Firefox, causing memory corruption when processing certain WebRTC packets. Based on the description, the vulnerability could allow an attacker to exploit that memory corruption to execute arbitrary code or crash the browser, leading to remote code execution or denial-of-service. The weakness is an instance of improper bounds checking (CWE-119).", "risk_and_exploitability": "No EPSS or CVSS data is supplied, and the vulnerability is not listed in the CISA KEV catalog. The lack of an EPSS score does not indicate low risk; it simply means the exploitation probability has not been quantified. Based on the stated vulnerability, the likely attack vector is an attacker-controlled WebRTC stream or a malicious webpage that initiates WebRTC traffic, which an unpatched user would process. Monitoring and patching are required to mitigate the risk."}}}}, "created": "2026-04-21T17:45:16.246887+00:00", "updated": "2026-04-22T03:30:06.682406+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox"], "weaknesses": ["CWE-119"]}