# Microsoft Edge Beta 140.0.3485.11

Microsoft Edge Beta 140.0.3485.11, released August 14, 2025, fixes 6 CVEs in Microsoft Edge Beta. None of them is reported as exploited. Patch Radar priority: Urgent. The latest Microsoft Edge Beta is 158.0.4370.16, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/microsoft.edge.beta-140.0.3485.11
- Platform: Windows apps
- Released: Aug 14, 2025
- Priority: Urgent (Closes CVE-2025-9478, rated Critical)
- CVEs: 6, exploited: 0, on CISA KEV: 0
- Superseded by: [Microsoft Edge Beta 158.0.4370.16](https://patchblox.com/security/data/product/windows-app/microsoft-edge-beta.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Edge Beta](https://patchblox.com/security/data/product/windows-app/microsoft-edge-beta.md) |  | 140.0.3485.11 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-9478](https://patchblox.com/security/data/cve/CVE-2025-9478.md) | Urgent | Chromium: CVE-2025-9478 Use after free in ANGLE | 9.6 | 0.0742 |  |
| [CVE-2025-8901](https://patchblox.com/security/data/cve/CVE-2025-8901.md) | Urgent | Chromium: CVE-2025-8901 Out of bounds write in ANGLE | 9.6 | 0.0034 |  |
| [CVE-2025-8879](https://patchblox.com/security/data/cve/CVE-2025-8879.md) | High | Chromium: CVE-2025-8879 Heap buffer overflow in libaom | 8.8 | 0.0030 |  |
| [CVE-2025-8880](https://patchblox.com/security/data/cve/CVE-2025-8880.md) | High | Chromium: CVE-2025-8880 Race in V8 | 8.8 | 0.0028 |  |
| [CVE-2025-8882](https://patchblox.com/security/data/cve/CVE-2025-8882.md) | High | Chromium: CVE-2025-8882 Use after free in Aura | 8.8 | 0.0027 |  |
| [CVE-2025-8881](https://patchblox.com/security/data/cve/CVE-2025-8881.md) | Routine | Chromium: CVE-2025-8881 Inappropriate implementation in File Picker | 6.5 | 0.0026 |  |

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Data as of 2026-11-11T13:47:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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