# Microsoft Edge Dev 134.0.3081.2

Microsoft Edge Dev 134.0.3081.2, released January 22, 2025, fixes 16 CVEs in Microsoft Edge Dev. None of them is reported as exploited. Patch Radar priority: High. The latest Microsoft Edge Dev is 159.0.4378.0, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/microsoft.edge.dev-134.0.3081.2
- Platform: Windows apps
- Released: Jan 22, 2025
- Priority: High (Closes CVE-2025-21279, high severity)
- CVEs: 16, exploited: 0, on CISA KEV: 0
- Superseded by: [Microsoft Edge Dev 159.0.4378.0](https://patchblox.com/security/data/product/windows-app/microsoft-edge-dev.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Edge Dev](https://patchblox.com/security/data/product/windows-app/microsoft-edge-dev.md) |  | 134.0.3081.2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-21279](https://patchblox.com/security/data/cve/CVE-2025-21279.md) | High | Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability | 8.8 | 0.0161 |  |
| [CVE-2025-21283](https://patchblox.com/security/data/cve/CVE-2025-21283.md) | High | Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability | 8.8 | 0.0149 |  |
| [CVE-2025-21408](https://patchblox.com/security/data/cve/CVE-2025-21408.md) | High | Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability | 8.8 | 0.0132 |  |
| [CVE-2025-21342](https://patchblox.com/security/data/cve/CVE-2025-21342.md) | High | Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability | 8.8 | 0.0125 |  |
| [CVE-2025-0999](https://patchblox.com/security/data/cve/CVE-2025-0999.md) | High | Chromium: CVE-2025-0999 Heap buffer overflow in V8 | 8.8 | 0.0063 |  |
| [CVE-2025-1426](https://patchblox.com/security/data/cve/CVE-2025-1426.md) | High | Chromium: CVE-2025-1006 Use after free in Network | 8.8 | 0.0059 |  |
| [CVE-2025-1006](https://patchblox.com/security/data/cve/CVE-2025-1006.md) | High | Chromium: CVE-2025-1426 Heap buffer overflow in GPU | 8.8 | 0.0050 |  |
| [CVE-2025-0444](https://patchblox.com/security/data/cve/CVE-2025-0444.md) | High | Chromium: CVE-2025-0444 Use after free in Skia | 9.6 | 0.0046 |  |
| [CVE-2025-0995](https://patchblox.com/security/data/cve/CVE-2025-0995.md) | High | Chromium: CVE -2025-0995  Use after free in V8 | 8.8 | 0.0045 |  |
| [CVE-2025-0997](https://patchblox.com/security/data/cve/CVE-2025-0997.md) | High | Chromium: CVE -2025-0997  Use after free in Navigation | 8.1 | 0.0040 |  |
| [CVE-2025-21404](https://patchblox.com/security/data/cve/CVE-2025-21404.md) | Routine | Microsoft Edge (Chromium-based) Spoofing Vulnerability | 4.3 | 0.0108 |  |
| [CVE-2025-21267](https://patchblox.com/security/data/cve/CVE-2025-21267.md) | Routine | Microsoft Edge (Chromium-based) Spoofing Vulnerability | 4.4 | 0.0057 |  |
| [CVE-2025-0445](https://patchblox.com/security/data/cve/CVE-2025-0445.md) | Routine | Chromium: CVE-2025-0445 Use after free in V8 | 5.4 | 0.0039 |  |
| [CVE-2025-0451](https://patchblox.com/security/data/cve/CVE-2025-0451.md) | Routine | Chromium: CVE-2025-0451 Inappropriate implementation in Extensions API | 6.3 | 0.0037 |  |
| [CVE-2025-0996](https://patchblox.com/security/data/cve/CVE-2025-0996.md) | Routine | Chromium: CVE -2025-0996  Inappropriate implementation in Browser UI | 5.4 | 0.0036 |  |
| [CVE-2025-21401](https://patchblox.com/security/data/cve/CVE-2025-21401.md) | Routine | Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability | 4.5 | 0.0032 |  |

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Data as of 2026-11-10T13:56:55Z 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

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