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{"bugzilla": {"description": "chromium-browser: Heap buffer overflow in WebAudio", "id": "2449401", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449401"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["A heap buffer overflow flaw was found in the WebAudio component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=485292589"], "name": "CVE-2026-4443", "public_date": "2026-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4443\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4443\nhttps://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html\nhttps://issues.chromium.org/issues/485292589"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,146.0.7680.153)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "inferred", "scores": [{"score": 100.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Chrome", "source": "cna", "vendor": "Google"}, "product": "chrome", "vendor": "google"}], "analysis": {"en": {"generated_at": "2026-03-20T13:26:35.503073+00:00", "value": {"mitigation_remediation": ["Upgrade Google Chrome to version 146.0.7680.153 or later.", "Verify that the browser is up\u2011to\u2011date by checking the Chrome update log or using the browser's built\u2011in update mechanism.", "If an immediate update is not possible, limit exposure by avoiding untrusted web content or disabling the WebAudio feature via Chrome flags."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The affected product is Google Chrome, the mainstream web browser from Google. Any installation of Chrome on desktop platforms running a Chromium-based engine prior to build 146.0.7680.153 is susceptible. The vulnerability targets the WebAudio API used for audio processing within web pages.", "description_and_impact": "A heap buffer overflow exists in the WebAudio component of Google Chrome before version 146.0.7680.153. The flaw permits a remote attacker to craft a malicious HTML page that triggers the overflow, enabling execution of arbitrary code inside the browser's sandbox environment. This vulnerability corresponds to the memory management weakness identified by CWE\u2011120 (Heap Buffer Overflow) and CWE\u2011122 (Incorrect Calculation of Buffer Boundaries).", "risk_and_exploitability": "The CVSSv3 score for this issue is 9.6, indicating a very high severity. Exploitation requires only a crafted web page that the victim opens or visits, so the attack vector is client\u2011side, mediated by the browser. While the EPSS score is not available, the lack of a public exploit combined with the high CVSS suggests a significant potential risk. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog."}}}}, "created": "2026-03-20T08:53:32.386073+00:00", "updated": "2026-03-20T14:14:32.785956+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}