CVE-2026-16367: Sandbox escape due to invalid pointer in the Disability Access APIs component

Published Jul 21, 2026
·
Updated

Sandbox escape due to invalid pointer in the Disability Access APIs component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.

Affected Software

5 affected componentsFixes available
Mozilla Firefox=153
Mozilla Firefox<153
153
Mozilla Thunderbird<153
153
Mozilla Firefox<153.0.0
Mozilla Thunderbird<153.0

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
  2. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 153
  3. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 153

Event History

Jul 21, 2026
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Updated
via Mozilla·12:00 AM
Affected Software
CVE Published
via MITRE·12:37 PM
Data Sourced
via MITRE·12:37 PM
Description
Data Sourced
via NVD·01:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2026-16367?

CVE-2026-16367 has a severity rating of critical, with a CVSS score of 10.

2

How do I fix CVE-2026-16367?

To address CVE-2026-16367, users should update to Mozilla Firefox version 153 or later.

3

What impact does CVE-2026-16367 pose?

CVE-2026-16367 could allow an attacker to escape the sandbox, potentially leading to a complete compromise of the system.

4

Which software is affected by CVE-2026-16367?

CVE-2026-16367 affects Mozilla Firefox and Mozilla Thunderbird.

5

What type of vulnerability is CVE-2026-16367?

CVE-2026-16367 is categorized as a sandbox escape due to buffer overflow and use after free issues in the Disability Access APIs.

Company

Resources

Contact

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CVE-2026-16367 - Sandbox escape due to invalid pointer in the Disability Access APIs component - SecAlerts