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{"bugzilla": {"description": "chromium-browser: Out of bounds write in V8", "id": "2449396", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449396"}, "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-787", "details": ["An out of bounds write flaw was found in the V8 component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=487746373"], "name": "CVE-2026-4450", "public_date": "2026-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4450\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4450\nhttps://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html\nhttps://issues.chromium.org/issues/487746373"], "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": "[146.0.7680.153,146.0.7680.153)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Chrome", "source": "cna", "vendor": "Google"}, "product": "chrome", "vendor": "google"}], "analysis": {"en": {"generated_at": "2026-03-20T19:23:41.743118+00:00", "value": {"mitigation_remediation": ["Update Google Chrome to version 146.0.7680.153 or later."], "summary": {"action": "Immediate Patch", "impact": "Potential remote heap corruption leading to code execution or data corruption"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Google Chrome across all operating systems where Chrome is available \u2013 Windows, macOS, and Linux. Versions of Chrome prior to 146.0.7680.153 are impacted; installing any newer release mitigates the problem.", "description_and_impact": "Out of bounds write in the V8 JavaScript engine can corrupt heap objects when processing a crafted HTML page. This flaw allows a remote attacker to cause memory corruption, potentially leading to arbitrary code execution or denial of service. The weakness is identified as a buffer overread and write, consistent with a covariance in memory management (CWE-787).", "risk_and_exploitability": "The vulnerability carries a high severity CVSS score of 8.8 and has a very low EPSS score (<1%), indicating that widespread exploitation is not expected yet. It is not listed in the CISA KEV catalog. Attackers are able to trigger the exploit by delivering a malicious HTML page to a vulnerable browser, either through the Internet or local file inclusion, making the attack vector remote and web-based. Given the nature of the flaw, successful exploitation can compromise confidentiality, integrity, and availability of the affected system."}}}}, "created": "2026-03-20T08:53:26.519428+00:00", "updated": "2026-03-25T14:09:55.750490+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}