# Microsoft Edge Dev security updates

The latest version of Microsoft Edge Dev is 159.0.4378.0, released November 2, 2026. Patch Radar has 23 security fixes for Microsoft Edge Dev, closing 4,092 CVEs, 47 of which are being exploited. The newest security fix is Microsoft Edge Dev 157.0.4322.0, released October 6, 2026. Version 159.0.4378.0 adds no new CVE fixes and includes all of them.

- Web page: https://patchblox.com/security/product/windows-app/microsoft-edge-dev
- Platform: Windows apps
- Vendor: Microsoft
- Latest version: 159.0.4378.0 (Nov 2, 2026)
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| Microsoft Edge Dev 159.0.4378.0 (latest, includes every fix below) | Nov 2, 2026 | 159.0.4378.0 |  |  |  |
| [Microsoft Edge Dev 157.0.4322.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-157.0.4322.0.md) | Oct 6, 2026 | 157.0.4322.0 | Urgent | 361 | 0 |
| [Microsoft Edge Dev 156.0.4285.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-156.0.4285.0.md) | Sep 17, 2026 | 156.0.4285.0 | Urgent | 225 | 0 |
| [Microsoft Edge Dev 155.0.4273.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-155.0.4273.0.md) | Sep 11, 2026 | 155.0.4273.0 | Patch now | 128 | 1 |
| [Microsoft Edge Dev 154.0.4238.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-154.0.4238.0.md) | Aug 25, 2026 | 154.0.4238.0 | Patch now | 243 | 1 |
| [Microsoft Edge Dev 153.0.4224.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-153.0.4224.0.md) | Aug 17, 2026 | 153.0.4224.0 | Patch now | 311 | 1 |
| [Microsoft Edge Dev 152.0.4167.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-152.0.4167.0.md) | Jul 20, 2026 | 152.0.4167.0 | Patch now | 1,695 | 7 |
| [Microsoft Edge Dev 142.0.3558.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-142.0.3558.0.md) | Sep 15, 2025 | 142.0.3558.0 | High | 12 | 0 |
| [Microsoft Edge Dev 141.0.3500.1](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-141.0.3500.1.md) | Aug 19, 2025 | 141.0.3500.1 | Patch now | 12 | 1 |
| [Microsoft Edge Dev 140.0.3421.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-140.0.3421.0.md) | Jul 7, 2025 | 140.0.3421.0 | High | 14 | 0 |
| [Microsoft Edge Dev 139.0.3405.13](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-139.0.3405.13.md) | Jul 3, 2025 | 139.0.3405.13 | High | 6 | 0 |
| [Microsoft Edge Dev 139.0.3365.2](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-139.0.3365.2.md) | Jun 10, 2025 | 139.0.3365.2 | Patch now | 15 | 2 |
| [Microsoft Edge Dev 138.0.3309.1](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-138.0.3309.1.md) | May 14, 2025 | 138.0.3309.1 | Patch now | 14 | 1 |
| [Microsoft Edge Dev 137.0.3255.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-137.0.3255.0.md) | Apr 11, 2025 | 137.0.3255.0 | Urgent | 8 | 0 |
| [Microsoft Edge Dev 136.0.3193.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-136.0.3193.0.md) | Mar 13, 2025 | 136.0.3193.0 | High | 12 | 0 |
| [Microsoft Edge Dev 135.0.3140.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-135.0.3140.0.md) | Feb 15, 2025 | 135.0.3140.0 | Patch now | 17 | 2 |
| [Microsoft Edge Dev 134.0.3081.2](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-134.0.3081.2.md) | Jan 22, 2025 | 134.0.3081.2 | High | 16 | 0 |
| [Microsoft Edge Dev 133.0.2992.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-133.0.2992.0.md) | Dec 2, 2024 | 133.0.2992.0 | High | 17 | 0 |
| [Microsoft Edge Dev 132.0.2917.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-132.0.2917.0.md) | Oct 25, 2024 | 132.0.2917.0 | High | 19 | 0 |
| [Microsoft Edge Dev 131.0.2863.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-131.0.2863.0.md) | Sep 28, 2024 | 131.0.2863.0 | High | 25 | 0 |
| [Microsoft Edge Dev 130.0.2808.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-130.0.2808.0.md) | Aug 30, 2024 | 130.0.2808.0 | Urgent | 16 | 0 |
| [Microsoft Edge Dev 129.0.2752.4](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-129.0.2752.4.md) | Aug 7, 2024 | 129.0.2752.4 | Patch now | 29 | 2 |
| [Microsoft Edge Dev 127.0.2651.8](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-127.0.2651.8.md) | Jun 21, 2024 | 127.0.2651.8 | Patch now | 873 | 29 |
| [Microsoft Edge Dev 128.0.2661.0](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.dev-128.0.2661.0.md) | Jun 19, 2024 | 128.0.2661.0 | High | 24 | 0 |

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Data as of 2026-11-09T19:38:12Z 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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