# Firefox Developer Edition (en-US) 145.0

Firefox Developer Edition (en-US) 145.0, released October 31, 2025, fixes 17 CVEs in Firefox Developer Edition (en-US). None of them is reported as exploited. Patch Radar priority: Urgent. The latest Firefox Developer Edition (en-US) is 156.0, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/mozilla.firefox.developeredition-145.0
- Platform: Windows apps
- Released: Oct 31, 2025
- Priority: Urgent (Closes CVE-2025-13022, rated Critical)
- CVEs: 17, exploited: 0, on CISA KEV: 0
- Superseded by: [Firefox Developer Edition (en-US) 156.0](https://patchblox.com/security/data/product/windows-app/firefox-developer-edition-en-us.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Firefox Developer Edition (en-US)](https://patchblox.com/security/data/product/windows-app/firefox-developer-edition-en-us.md) |  | 145.0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-13021](https://patchblox.com/security/data/cve/CVE-2025-13021.md) | Urgent | Incorrect boundary conditions in the Graphics: WebGPU component | 9.8 | 0.0038 |  |
| [CVE-2025-13022](https://patchblox.com/security/data/cve/CVE-2025-13022.md) | Urgent | Incorrect boundary conditions in the Graphics: WebGPU component | 9.8 | 0.0038 |  |
| [CVE-2025-13023](https://patchblox.com/security/data/cve/CVE-2025-13023.md) | Urgent | Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component | 9.8 | 0.0038 |  |
| [CVE-2025-13024](https://patchblox.com/security/data/cve/CVE-2025-13024.md) | Urgent | JIT miscompilation in the JavaScript Engine: JIT component | 9.8 | 0.0038 |  |
| [CVE-2025-13026](https://patchblox.com/security/data/cve/CVE-2025-13026.md) | Urgent | Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component | 9.8 | 0.0038 |  |
| [CVE-2025-12380](https://patchblox.com/security/data/cve/CVE-2025-12380.md) | Urgent | Use-after-free in WebGPU internals triggered from a compromised child process | 9.8 | 0.0034 |  |
| [CVE-2025-13016](https://patchblox.com/security/data/cve/CVE-2025-13016.md) | High | Incorrect boundary conditions in the JavaScript: WebAssembly component | 7.5 | 0.0041 |  |
| [CVE-2025-13027](https://patchblox.com/security/data/cve/CVE-2025-13027.md) | High | Memory safety bugs fixed in Firefox 145 and Thunderbird 145 | 8.1 | 0.0036 |  |
| [CVE-2025-13014](https://patchblox.com/security/data/cve/CVE-2025-13014.md) | High | Use-after-free in the Audio/Video component | 8.8 | 0.0032 |  |
| [CVE-2025-13020](https://patchblox.com/security/data/cve/CVE-2025-13020.md) | High | Use-after-free in the WebRTC: Audio/Video component | 8.8 | 0.0031 |  |
| [CVE-2025-13025](https://patchblox.com/security/data/cve/CVE-2025-13025.md) | High | Incorrect boundary conditions in the Graphics: WebGPU component | 7.5 | 0.0030 |  |
| [CVE-2025-13017](https://patchblox.com/security/data/cve/CVE-2025-13017.md) | High | Same-origin policy bypass in the DOM: Notifications component | 8.1 | 0.0028 |  |
| [CVE-2025-13018](https://patchblox.com/security/data/cve/CVE-2025-13018.md) | High | Mitigation bypass in the DOM: Security component | 8.1 | 0.0028 |  |
| [CVE-2025-13019](https://patchblox.com/security/data/cve/CVE-2025-13019.md) | High | Same-origin policy bypass in the DOM: Workers component | 8.1 | 0.0028 |  |
| [CVE-2025-13012](https://patchblox.com/security/data/cve/CVE-2025-13012.md) | High | Race condition in the Graphics component | 7.5 | 0.0024 |  |
| [CVE-2025-13015](https://patchblox.com/security/data/cve/CVE-2025-13015.md) | High | Spoofing issue in Firefox | 7.5 | 0.0023 |  |
| [CVE-2025-13013](https://patchblox.com/security/data/cve/CVE-2025-13013.md) | High | Mitigation bypass in the DOM: Core & HTML component | 7.5 | 0.0022 |  |

---

Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.