# Microsoft Edge 146.0.3856.84

Microsoft Edge 146.0.3856.84, released March 26, 2026, fixes 8 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-146.0.3856.84
- Platform: Windows apps
- Released: Mar 26, 2026
- Priority: High (Closes CVE-2026-4673, high severity)
- CVEs: 8, 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- Superseded by: [Microsoft Edge 156.0.4314.58](https://patchblox.com/security/data/product/windows-app/microsoft-edge.md), the latest version, which also fixes every CVE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) |  | 146.0.3856.84 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-4673](https://patchblox.com/security/data/cve/CVE-2026-4673.md) | High | Chromium: CVE-2026-4673 Heap buffer overflow in WebAudio | 8.8 | 0.0051 |  |
| [CVE-2026-4674](https://patchblox.com/security/data/cve/CVE-2026-4674.md) | High | Chromium: CVE-2026-4674 Out of bounds read in CSS | 8.8 | 0.0046 |  |
| [CVE-2026-4677](https://patchblox.com/security/data/cve/CVE-2026-4677.md) | High | Chromium: CVE-2026-4677 Out of bounds read in WebAudio | 8.8 | 0.0046 |  |
| [CVE-2026-4680](https://patchblox.com/security/data/cve/CVE-2026-4680.md) | High | Chromium: CVE-2026-4680 Use after free in FedCM | 8.8 | 0.0043 |  |
| [CVE-2026-4678](https://patchblox.com/security/data/cve/CVE-2026-4678.md) | High | Chromium: CVE-2026-4678 Use after free in WebGPU | 8.8 | 0.0040 |  |
| [CVE-2026-4675](https://patchblox.com/security/data/cve/CVE-2026-4675.md) | High | Chromium: CVE-2026-4675 Heap buffer overflow in WebGL | 8.8 | 0.0039 |  |
| [CVE-2026-4676](https://patchblox.com/security/data/cve/CVE-2026-4676.md) | High | Chromium: CVE-2026-4676 Use after free in Dawn | 8.8 | 0.0037 |  |
| [CVE-2026-4679](https://patchblox.com/security/data/cve/CVE-2026-4679.md) | High | Chromium: CVE-2026-4679 Integer overflow in Fonts | 8.8 | 0.0035 |  |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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.