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{"bugzilla": {"description": "firefox: Incorrect boundary conditions in the WebRTC component", "id": "2460078", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460078"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-131", "details": ["A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue:\nIncorrect boundary conditions in the WebRTC component"], "name": "CVE-2026-6752", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "rhel10/firefox-flatpak", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "firefox", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-04-21T12:40:49Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-6752\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-6752\nhttps://www.mozilla.org/security/advisories/mfsa2026-30/#CVE-2026-6752\nhttps://www.mozilla.org/security/advisories/mfsa2026-31/#CVE-2026-6752\nhttps://www.mozilla.org/security/advisories/mfsa2026-32/#CVE-2026-6752"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.", "threat_severity": "Important"}

{"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": "2026-04-22T15:14:19.915496+00:00", "value": {"mitigation_remediation": ["Upgrade to Firefox 150 or newer, or to ESR 115.35 / 140.10, where WebRTC boundary checks have been fixed.", "Upgrade to Thunderbird 150 or newer, or to 140.10, where the issue has been patched.", "If upgrading is not immediately feasible, disable WebRTC by setting media.peerconnection.enabled to false in about:config or using a privacy\u2011shielding extension.", "Alternatively, block or restrict getUserMedia through browser settings or extensions to reduce the risk of malicious media access.", "Monitor Mozilla security advisories for any updates or patch releases."], "summary": {"action": "Patch", "impact": "Potential Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Firefox releases older than version 150\u2014including the ESR branches before 115.35 and 140.10\u2014are vulnerable, as are Thunderbird builds released before version 150 or before 140.10. Both products use the WebRTC stack, so any user of these outdated versions could be exposed.", "description_and_impact": "The CVE description states an incorrect boundary condition within the WebRTC component of Mozilla browsers and Thunderbird. This flaw could enable a buffer overrun or other form of memory corruption when processing malformed WebRTC packets, potentially allowing an attacker to crash the application or, in the worst case, execute arbitrary code.", "risk_and_exploitability": "The CVSS score of 7.3 indicates high severity, while the EPSS score is not available, and the vulnerability is not listed in CISA\u2019s KEV catalog. Attackers would most likely target the flaw via malicious webpages or controlled WebRTC streams that deliver specially crafted packet data, so user-facing applications should be updated promptly."}}}}, "created": "2026-04-21T17:45:16.246887+00:00", "updated": "2026-04-22T15:15:16.428093+00:00", "vendors": ["mozilla", "mozilla$PRODUCT$firefox"]}