Use after free in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code insi...

Date Sep 8, 2026

Type Patch Tuesday

Signal High-risk advisory

Vendor / Product Microsoft · Mariner

CVE CVE-2026-87536

High-risk advisory CVE-2026-87536

Summary

Use after free in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High) Published in September 2026 Security Updates.

Why it matters

Microsoft published this item through its Security Update Guide, making it part of Patch Tuesday triage for affected Windows, cloud, or application estates. EPSS percentile: 19%.

Operator check

Review the Microsoft Security Update Guide entry for CVE-2026-87536. Confirm whether Mariner is deployed, then apply the current security update or documented mitigation. CVSS score: 8.8. EPSS probability: 0.3%; percentile: 19%.

Sources

MSRC 2026-Sep Security Update Guide NVD — CVE-2026-87536 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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