CVE-2025-14333
High · 8.1CVSS
8.1
EPSS
0.4%
Published
Dec 9, 2025
CISA due date
—
The record
Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| AlmaLinux:10 | firefox | 0 | 140.6.0-1.el10_1 |
| AlmaLinux:10 | thunderbird | 0 | 140.6.0-1.el10_1.alma.1 |
| AlmaLinux:8 | firefox | 0 | 140.6.0-1.el8_10.alma.1 |
| AlmaLinux:8 | thunderbird | 0 | 140.6.0-1.el8_10.alma.1 |
| AlmaLinux:9 | firefox | 0 | 140.6.0-1.el9_7.alma.1 |
| AlmaLinux:9 | firefox-x11 | 0 | 140.6.0-1.el9_7.alma.1 |
| AlmaLinux:9 | thunderbird | 0 | 140.6.0-1.el9_7.alma.1 |
| Mageia:9 | firefox | 0 | 140.6.0-1.mga9 |
| Mageia:9 | firefox-l10n | 0 | 140.6.0-1.mga9 |
| Mageia:9 | nspr | 0 | 4.38.2-1.mga9 |
| Mageia:9 | nss | 0 | 3.119.0-1.mga9 |
| Mageia:9 | thunderbird | 0 | 140.6.0-1.mga9 |
| Mageia:9 | thunderbird-l10n | 0 | 140.6.0-1.mga9 |
| SUSE:Enterprise Storage 7.1 | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Module for Desktop Applications 15 SP6 | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Module for Desktop Applications 15 SP7 | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Module for Package Hub 15 SP6 | MozillaThunderbird | 0 | 140.6.0-150200.8.248.1 |
| SUSE:Linux Enterprise Module for Package Hub 15 SP7 | MozillaThunderbird | 0 | 140.6.0-150200.8.248.1 |
| SUSE:Linux Enterprise Server 15 SP3-LTSS | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Server 15 SP4-LTSS | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP3 | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| SUSE:Linux Enterprise Workstation Extension 15 SP6 | MozillaThunderbird | 0 | 140.6.0-150200.8.248.1 |
| SUSE:Linux Enterprise Workstation Extension 15 SP7 | MozillaThunderbird | 0 | 140.6.0-150200.8.248.1 |
| openSUSE:Leap 15.6 | MozillaFirefox | 0 | 140.6.0-150200.152.213.1 |
| openSUSE:Leap 15.6 | MozillaThunderbird | 0 | 140.6.0-150200.8.248.1 |
| openSUSE:Leap 16.0 | MozillaFirefox | 0 | 140.6.0-160000.1.1 |
| openSUSE:Leap 16.0 | MozillaThunderbird | 0 | 140.6.0-bp160.1.1 |
| openSUSE:Tumbleweed | MozillaFirefox | 0 | 146.0-1.1 |
| openSUSE:Tumbleweed | MozillaThunderbird | 0 | 140.6.0-1.1 |
| openSUSE:Tumbleweed | firefox-esr | 0 | 140.6.0-1.1 |
Related vulnerabilities
- CVE-2025-14331 Same-origin policy bypass in the Request Handling component. Also affects firefox
- CVE-2025-14325 JIT miscompilation in the JavaScript Engine: JIT component. Also affects firefox
- CVE-2025-14330 JIT miscompilation in the JavaScript Engine: JIT component. Also affects firefox
- CVE-2025-14328 Privilege escalation in the Netmonitor component. Also affects firefox
- CVE-2025-14329 Privilege escalation in the Netmonitor component. Also affects firefox
- CVE-2025-14323 Privilege escalation in the DOM: Notifications component. Also affects firefox
- CVE-2025-14321 Use-after-free in the WebRTC: Signaling component. Also affects firefox
- CVE-2025-14322 Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL… Also affects firefox