CVE-2025-14322: Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component

Published Dec 9, 2025
·
Updated

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

Other sources

Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability affects Firefox < 146, Firefox ESR < 115.31, and Firefox ESR < 140.6.

— Red Hat

Affected Software

25 affected componentsFixes available
Mozilla Firefox<146
Mozilla Firefox ESR<115.31, <140.6
Mozilla Firefox ESR<115.31
115.31
Mozilla Thunderbird<146
146
Mozilla Firefox<115.31.0
Mozilla Firefox<146.0
Mozilla Firefox>=116.0<140.6.0
Mozilla Thunderbird<140.6.0
Mozilla Thunderbird<146.0
ubuntu/mozjs52*
ubuntu/mozjs38*
ubuntu/mozjs68*
ubuntu/mozjs52*
ubuntu/mozjs102*
ubuntu/mozjs78*
ubuntu/mozjs91*
ubuntu/thunderbird<1:140.7.1+build1-0ubuntu0.22.04.1
1:140.7.1+build1-0ubuntu0.22.04.1
ubuntu/mozjs102*
ubuntu/mozjs115*
Mozilla Firefox<146
146
Mozilla Firefox ESR<140.6
140.6
Mozilla Thunderbird<140.6
140.6
debian/firefox
160.0-1
debian/firefox-esr
140.12.0esr-1~deb12u1153.7.0esr-1~deb12u1140.15.0esr-1~deb13u1153.7.0esr-1~deb13u1153.5.1esr-1153.7.0esr-1
debian/thunderbird
1:140.12.0esr-1~deb12u11:153.7.0esr-1~deb12u11:140.12.0esr-1~deb13u11:153.7.0esr-1~deb13u11:153.5.0esr-11:153.7.0esr-1

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 115.31
  2. Upgrade

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

    Fixed in 146
  3. Upgrade

    Upgrade ubuntu/thunderbird to a version that resolves this vulnerability.

    Fixed in 1:140.7.1+build1-0ubuntu0.22.04.1
  4. Upgrade

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

    Fixed in 140.6
  5. Upgrade

    Upgrade debian/firefox to a version that resolves this vulnerability.

    Fixed in 160.0-1
  6. Upgrade

    Upgrade debian/firefox-esr to a version that resolves this vulnerability.

    Fixed in 140.12.0esr-1~deb12u1Fixed in 153.7.0esr-1~deb12u1Fixed in 140.15.0esr-1~deb13u1Fixed in 153.7.0esr-1~deb13u1Fixed in 153.5.1esr-1Fixed in 153.7.0esr-1
  7. Upgrade

    Upgrade debian/thunderbird to a version that resolves this vulnerability.

    Fixed in 1:140.12.0esr-1~deb12u1Fixed in 1:153.7.0esr-1~deb12u1Fixed in 1:140.12.0esr-1~deb13u1Fixed in 1:153.7.0esr-1~deb13u1Fixed in 1:153.5.0esr-1Fixed in 1:153.7.0esr-1
  8. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 146
  9. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 115.31
  10. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 140.6
  11. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 146
  12. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 140.6

Event History

Dec 9, 2025
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
CVE Published
via MITRE·01:37 PM
Data Sourced
via MITRE·01:37 PM
Description
Data Sourced
via Red Hat·02:01 PM
DescriptionSeverityAffected Software
Data Sourced
via OSV·04:17 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·04:17 PM
DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2025-14322?

CVE-2025-14322 has been classified as a high severity vulnerability due to the potential for sandbox escape.

2

How do I fix CVE-2025-14322?

To mitigate CVE-2025-14322, update to Firefox version 146 or later, or Firefox ESR version 115.31 or later.

3

Which versions of Firefox are affected by CVE-2025-14322?

CVE-2025-14322 affects Firefox versions earlier than 146 and Firefox ESR versions earlier than 115.31 and 140.6.

4

What is a sandbox escape related to CVE-2025-14322?

A sandbox escape in CVE-2025-14322 refers to an attacker gaining unauthorized access to system resources through the vulnerable Graphics: CanvasWebGL component.

5

Are there any known exploits for CVE-2025-14322?

As of now, there are no publicly known exploits specifically targeting CVE-2025-14322.

Company

Resources

Contact

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