CVE-2026-87491Google Chromium V8 Out of Bounds Write Vulnerability
Out of bounds write 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: Medium)
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 8.8 | HIGH | 3.1CISA-ADP | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Sep 23, 2026
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Details
- CVE ID
- CVE-2026-87491
- Status
- Analyzed
- Assigner (CNA)
- Chrome
- Published
- Sep 9, 2026
- Last modified
- 2026-09-21 13:17 UTC
- Weaknesses
- CWE-787 · Out of bounds write
Affected Products
As published by the CNA in the CVE record.
GoogleChrome1 version range
- 153.0.8010.36 before 153.0.8010.36