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{"bugzilla": {"description": "Google Chrome: Viz: Google Chrome: Sandbox escape in Viz component via use-after-free vulnerability", "id": "2458784", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2458784"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.0", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in Google Chrome's Viz component. This 'use-after-free' vulnerability allows a remote attacker, who has already compromised the browser's renderer process, to potentially escape the security sandbox. This can be achieved by enticing a user to visit a specially crafted HTML page, leading to further system compromise."], "name": "CVE-2026-6309", "public_date": "2026-04-15T19:04:52Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-6309\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-6309\nhttps://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html\nhttps://issues.chromium.org/issues/497846428"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[147.0.7727.101,147.0.7727.101)"}}], "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": "2026-04-17T06:55:25.677871+00:00", "value": {"mitigation_remediation": ["Upgrade to Chrome 147.0.7727.101 or later as soon as the update is available.", "Enable Chrome\u2019s automatic update feature to receive the latest stable channel patches promptly.", "Verify that untrusted or unknown HTML content is not loaded by applying content-filtering rules or isolating browsing sessions for sensitive data."], "summary": {"action": "Patch", "impact": "Sandbox Escape"}, "threat_synthesis": {"affected_systems": "All installations of Google Chrome prior to 147.0.7727.101 are affected. The vulnerability was addressed in the stable channel update released in April 2026. Users on these older versions should upgrade to the patched build as soon as it is available.", "description_and_impact": "Use-After-Free in the Viz rendering subsystem of Google Chrome prior to 147.0.7727.101 enables a remote attacker who has already compromised the browser\u2019s renderer process to potentially escape the sandbox. The flaw allows malicious crafted HTML to be processed after the memory that holds rendering data has been freed, providing a foothold for arbitrary code execution outside the renderer\u2019s restricted environment. This flaw corresponds to a use\u2011after\u2011free (CWE\u2011416) and also poses a potential privilege escalation problem (CWE\u2011825).", "risk_and_exploitability": "The CVSS score is 8.3 and the EPSS score is < 1%. The Chromium security team classified the issue as High severity. Exploitation requires the attacker to inject a crafted HTML page and already have a foothold in the renderer process; thus, the attack vector is local to a compromised renderer. Once exploited, the attacker could execute code with elevated privileges on the host system, bypassing the Chrome sandbox. No exploitation proof\u2011of\u2011concept has been reported, and the vulnerability is not listed in the CISA KEV catalog."}}}}, "created": "2026-04-15T21:45:14.059267+00:00", "updated": "2026-04-17T07:00:08.560339+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}