# Microsoft Edge 140.0.3485.54

Microsoft Edge 140.0.3485.54, released September 5, 2025, fixes 2 CVEs in Microsoft Edge. None of them is reported as exploited. Patch Radar priority: High. The latest Microsoft Edge is 156.0.4314.58, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/microsoft.edge-140.0.3485.54
- Platform: Windows apps
- Released: Sep 5, 2025
- Priority: High (Closes CVE-2025-9866, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Superseded by: [Microsoft Edge 156.0.4314.58](https://patchblox.com/security/data/product/windows-app/microsoft-edge.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Edge](https://patchblox.com/security/data/product/windows-app/microsoft-edge.md) |  | 140.0.3485.54 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-9866](https://patchblox.com/security/data/cve/CVE-2025-9866.md) | High | Chromium: CVE-2025-9866 Inappropriate implementation in Extensions | 8.8 | 0.0051 |  |
| [CVE-2025-53791](https://patchblox.com/security/data/cve/CVE-2025-53791.md) | Routine | Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability | 4.7 | 0.0041 |  |

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Data as of 2026-11-11T07:45:43Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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