CVE-2026-87491: isaware that an exploit for exists in the wild

Published Sep 8, 2026
·
Updated

Chromium CVE-2026-87491: Out of bounds write in V8

Other sources

Google Chromium V8 contains an out of bounds write vulnerability that allows a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

— CISA

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)

— NVD

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information. Google is aware that an exploit for CVE-2026-87491 exists in the wild.

— Microsoft

Affected Software

6 affected componentsFixes available
Google Chrome<153.0.8010.36
Google Chrome<153.0.8010.36
153.0.8010.36
Google Chromium V8
Google Chrome<153.0.8010.36
Microsoft Edge<152.0.4191.66
Microsoft Edge (Chromium-based)<153.0.4234.32
153.0.4234.32

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 153.0.8010.36
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 153.0.4234.32
  3. Upgrade

    Upgrade Google Chrome (Chromium-based) - V8 to a version that resolves this vulnerability.

    Fixed in 153.0.8010.36
  4. Upgrade

    Upgrade Microsoft Edge (Chromium-based) - V8 to a version that resolves this vulnerability.

    Fixed in 153.0.8010.36
  5. Compensating control

    Evaluate each affected asset’s internet exposure and apply/ensure risk-based patching per CISA BOD 26-04 (Prioritizing Security Updates Based on Risk) and the applicable “Forensics Triage Requirements” for any impacted systems.

Event History

Sep 8, 2026
CVE Published
12:00 AM
Known Exploited
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Sep 9, 2026
Data Sourced
via CISA·12:00 AM
RemedyDescriptionAffected Software
CVE Published
via MITRE·12:09 AM
Data Sourced
via MITRE·12:09 AM
DescriptionWeakness
Data Sourced
via NVD·01:17 AM
DescriptionSeverityWeaknessAffected Software
Sep 12, 2026
Data Sourced
via Microsoft·04:56 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·04:56 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which Chrome versions need to be updated?

Google Chrome versions prior to 153.0.8010.36 are affected. Update to 153.0.8010.36 or later.

2

What does an attacker need to exploit this issue?

The attacker needs to induce Chrome to process a crafted HTML page remotely. The reported impact is arbitrary code execution inside the Chrome sandbox.

Company

Resources

Contact

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