# CVE-2026-69486: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability

CVE-2026-69486 is fixed in 4 products on 2 platforms, first by Microsoft Edge Dev 154.0.4238.0, released August 25, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-69486
- Priority: High
- CVSS: 8.8 (Important)
- EPSS: 0.0082
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Sep 15, 2026
- Weakness: Heap-based Buffer Overflow
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69486

## Description

<p>Heap-based buffer overflow in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Microsoft Edge | 153.0.4234.32 | [Microsoft Edge 153.0.4234.32](https://patchblox.com/security/data/fix/windows-app/microsoft.edge-153.0.4234.32.md) | Sep 10, 2026 |
| Windows apps | Microsoft Edge Beta | 154.0.4258.12 | [Microsoft Edge Beta 154.0.4258.12](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.beta-154.0.4258.12.md) | Sep 11, 2026 |
| Windows apps | Microsoft Edge Dev | 154.0.4238.0 | [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 |
| Windows apps | Microsoft Edge WebView2 Runtime | 153.0.4234.46 | [Microsoft Edge WebView2 Runtime 153.0.4234.46](https://patchblox.com/security/data/fix/windows-app/microsoft.edgewebview2runtime-153.0.4234.46.md) | Sep 17, 2026 |
| macOS | Microsoft Edge | 153.0.4234.32 | [Microsoft Edge 153.0.4234.32](https://patchblox.com/security/data/fix/macos/com.microsoft.edgemac-153.0.4234.32.md) | Sep 10, 2026 |

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Data as of 2026-11-08T00:53:09Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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