CVE-2026-0886: Incorrect boundary conditions in the Graphics component

Published Jan 13, 2026
·
Updated

Incorrect boundary conditions in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, and Firefox ESR < 140.7.

Other sources

Incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

MITRE

Affected Software

10 affected componentsFixes available
Mozilla Firefox ESR<115.32
115.32
Mozilla Firefox<147
147
Mozilla Firefox ESR<140.7
140.7
Mozilla Thunderbird<140.7
140.7
Mozilla Thunderbird<147
147
Mozilla Firefox<115.32.0
Mozilla Firefox<147.0
Mozilla Firefox>=128.0<140.7.0
Mozilla Thunderbird<140.7.0
Mozilla Thunderbird<147.0

Event History

Jan 13, 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·01:30 PM
Data Sourced
via MITRE·01:30 PM
Description
Data Sourced
via Red Hat·02:03 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·02:16 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2026-0886?

CVE-2026-0886 has been rated as a high severity vulnerability.

2

How do I fix CVE-2026-0886?

To fix CVE-2026-0886, update to Mozilla Firefox version 147 or Firefox ESR version 140.7 or 115.32.

3

What are the affected versions for CVE-2026-0886?

CVE-2026-0886 affects Firefox versions prior to 147, Firefox ESR versions prior to 115.32, and Firefox ESR versions prior to 140.7.

4

What is the nature of the vulnerability in CVE-2026-0886?

CVE-2026-0886 involves incorrect boundary conditions in the graphics component.

5

Which products should be prioritized for updates related to CVE-2026-0886?

Prioritize updates for Mozilla Firefox and Mozilla Firefox ESR products that are below the specified versions.

Contact

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