CVE-2026-8543: Out of bounds read in FileSystem

Published Mar 28, 2026
·
Updated

Chromium: CVE-2026-8543 Out of bounds read in FileSystem

Other sources

Out of bounds read in FileSystem in Google Chrome on Mac prior to 148.0.7778.168 allowed a remote attacker who convinced a user to engage in specific UI gestures to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)

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

Microsoft

Credit

Google

Affected Software

5 affected componentsFixes available
Google Chrome<148.0.7778.167
148.0.7778.167
Microsoft Edge (Chromium-based)
Microsoft Edge<148.0.3967.70
All of the following
Google Chrome<148.0.7778.168
Apple macOS

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 148.0.7778.167
  2. Upgrade

    Upgrade Chromium-based browser (Microsoft Edge / Google Chrome ingest) to a version that resolves this vulnerability.

    Fixed in 148.0.7778.168

Event History

Mar 28, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
May 14, 2026
CVE Published
via MITRE·07:52 PM
Data Sourced
via MITRE·07:52 PM
DescriptionWeakness
Data Sourced
via NVD·08:17 PM
DescriptionSeverityWeaknessAffected Software
May 16, 2026
Data Sourced
via Microsoft·12:20 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·12:20 AM
DescriptionAffected Software
Apr 22, 58353
Event
via FIRST·11:03 AM

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-8543?

The severity of CVE-2026-8543 is rated as medium with a score of 5.3.

2

How do I fix CVE-2026-8543?

To fix CVE-2026-8543, update Google Chrome or Microsoft Edge to the latest version, specifically 148.0.7778.168 or later.

3

What are the impacts of CVE-2026-8543?

CVE-2026-8543 may allow a remote attacker to obtain potentially sensitive information from process memory due to an out of bounds read in the FileSystem.

4

Which software is affected by CVE-2026-8543?

CVE-2026-8543 affects Google Chrome on Mac and Chromium-based Microsoft Edge browsers.

5

When was CVE-2026-8543 published?

CVE-2026-8543 was published on March 28, 2026.

Contact

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