Description
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)
Published: 2026-09-09
Score: 9.6 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Patch Immediately
AI Analysis

Impact

Google Chrome contains a use‑after‑free bug in the Web Authentication implementation that allows an attacker to run arbitrary code outside the browser sandbox. A malicious web page that the user visits can trigger the flaw, resulting in a remote code execution that compromises the entire system. The bug is classified as CWE‑416 and is rated with high severity by Chromium (CVSS 9.6).

Affected Systems

The vulnerability exists in all Chrome releases before 153.0.8010.36. Systems running that older version are exposed, regardless of operating system or device type.

Risk and Exploitability

The CVE has not been recorded in the CISA KEV list and the EPSS score is < 1%, indicating a very low but non‑zero exploitation probability. Nevertheless, remote execution via a crafted HTML page suggests the attack vector is a web‑based threat that could be delivered through phishing or compromised sites. The high severity rating combined with the confirmed ability to escape the browser sandbox makes this a critical security risk.

Generated by OpenCVE AI on September 9, 2026 at 19:10 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update Chrome to version 153.0.8010.36 or newer, either through the built‑in auto‑update mechanism or manual installation from the official Google website.
  • Enable and ensure Chrome auto‑updates are functioning on all devices to receive future security patches without manual intervention.
  • If an upgrade cannot be applied immediately, consider restricting Web Authentication or blocking JavaScript on untrusted websites until the vulnerability is fixed.

Generated by OpenCVE AI on September 9, 2026 at 19:10 UTC.

Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-4790-1 chromium security update
Debian DSA Debian DSA DSA-6506-1 chromium security update
History

Wed, 09 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Title Use After Free in Chrome Web Authentication for Arbitrary Code Execution

Wed, 09 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
Vendors & Products Google
Google chrome

Wed, 09 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 09 Sep 2026 08:30:00 +0000

Type Values Removed Values Added
Title Use After Free in Chrome Web Authentication for Arbitrary Code Execution

Wed, 09 Sep 2026 01:00:00 +0000

Type Values Removed Values Added
Description 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)
Weaknesses CWE-416
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-09-10T03:55:53.932Z

Reserved: 2026-09-08T22:43:58.305Z

Link: CVE-2026-87646

cve-icon Vulnrichment

Updated: 2026-09-09T13:30:34.131Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-09T01:17:23.077

Modified: 2026-09-10T04:18:31.383

Link: CVE-2026-87646

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T10:30:04Z

Weaknesses