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Google Chrome CVE-2026-87621

| EUVDEUVD-2026-74506 CRITICAL
Out-of-bounds Write (CWE-787)
2026-09-09 Chrome GHSA-6g4w-r5fc-vqc3
9.6
CVSS 3.1 · Vendor: Chrome
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Severity by source

Vendor (Chrome) PRIMARY
9.6 CRITICAL
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
vuln.today AI
9.6 CRITICAL

Remote crafted page needs user to load it (UI:R, PR:N); a sandbox escape crosses trust boundaries (S:C) with full code-execution impact (C/I/A:H).

3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Primary rating from Vendor (Chrome).

CVSS VectorVendor: Chrome

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

5
Metadata Corrected
Sep 09, 2026 - 15:40 vuln.today
tag: Microsoft removed
Analysis Generated
Sep 09, 2026 - 15:19 vuln.today
Patch available
Sep 09, 2026 - 01:03 EUVD
CVE Published
Sep 09, 2026 - 00:09 cve.org
UNKNOWN (no severity yet)
CVE Published
Sep 09, 2026 - 00:09 cve.org
CRITICAL 9.6

DescriptionCVE.org

Out of bounds write in ANGLE in Google Chrome on on Windows prior to 153.0.8010.36 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)

AnalysisAI

Remote code execution in Google Chrome's ANGLE graphics component on Windows (versions prior to 153.0.8010.36) allows a remote attacker to trigger an out-of-bounds write and potentially execute arbitrary code outside the browser sandbox via a crafted HTML page. Rated Chromium 'High' with a CVSS of 9.6 reflecting a scope-changing sandbox escape, though exploitation requires the victim to load malicious web content. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Requires the victim to open a crafted HTML page in Google Chrome on Windows prior to 153.0.8010.36 (UI:R - user interaction is mandatory; no prior authentication is needed). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Signals are mixed. … 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 on Windows via the Chrome stable channel; restart the browser to apply the update since Chrome patches only take effect after relaunch. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct an inventory of all Windows systems running Google Chrome prior to version 153.0.8010.36 and classify by risk tier based on user role and data access; prioritize tier-1 assets including executive workstations and development machines. …

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CVE-2026-87621 vulnerability details – vuln.today

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