EUVD-2026-74508
GHSA-9x9x-4c34-42c8
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Network-delivered crafted page (AV:N/AC:L/PR:N) needs user to visit (UI:R); sandbox escape crosses boundary (S:C) yielding full host code execution (C/I/A:H).
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Web Authentication in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Remote code execution outside the browser sandbox affects Google Chrome versions prior to 153.0.8010.36 through a use-after-free flaw in the Web Authentication (WebAuthn) component. A remote attacker who lures a victim to a crafted HTML page can corrupt memory and execute arbitrary code with the privileges of the browser process, escaping the renderer sandbox (scope change). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to load attacker-controlled content - a crafted HTML page - in an unpatched Chrome build prior to 153.0.8010.36, so user interaction (UI:R) is the primary limiting factor; there is no authentication requirement (PR:N) and no special server-side privileges are needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score is 9.6 with vector AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H - network-reachable, low complexity, no privileges, but requiring user interaction (visiting a malicious page) and crossing a security boundary (sandbox escape). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: update Google Chrome to 153.0.8010.36 or later via the Chrome Stable channel (Help > About Google Chrome triggers the update, then relaunch to apply). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, test Chrome 153.0.8010.36 against critical business applications in a pilot group to validate compatibility and identify any blocking issues. …
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Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-416 – Use After Free
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External POC / Exploit Code
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