# CVE-2026-66324: Microsoft Edge (Chromium-based) Spoofing Vulnerability

CVE-2026-66324 is fixed in 4 products on 2 platforms, first by Microsoft Edge Dev 153.0.4224.0, released August 17, 2026. 1 other affected product has no fix yet. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-66324
- Priority: Routine
- CVSS: 6.5 (Important)
- EPSS: 0.0092
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Unlikely
- Published: Aug 28, 2026
- Weakness: External Control of File Name or Path
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66324

## Description

<p>External control of file name or path in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Microsoft Edge | 152.0.4191.66 | [Microsoft Edge 152.0.4191.66](https://patchblox.com/security/data/fix/windows-app/microsoft.edge-152.0.4191.66.md) | Sep 4, 2026 |
| Windows apps | Microsoft Edge Beta | 153.0.4234.6 | [Microsoft Edge Beta 153.0.4234.6](https://patchblox.com/security/data/fix/windows-app/microsoft.edge.beta-153.0.4234.6.md) | Aug 27, 2026 |
| Windows apps | Microsoft Edge Dev | 153.0.4224.0 | [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 |
| Windows apps | Microsoft Edge WebView2 Runtime | 152.0.4191.53 | [Microsoft Edge WebView2 Runtime 152.0.4191.53](https://patchblox.com/security/data/fix/windows-app/microsoft.edgewebview2runtime-152.0.4191.53.md) | Aug 28, 2026 |
| macOS | Microsoft Edge | 152.0.4191.53 | [Microsoft Edge 152.0.4191.53](https://patchblox.com/security/data/fix/macos/com.microsoft.edgemac-152.0.4191.53.md) | Aug 27, 2026 |

## No fix yet

| Platform | Product | Status |
|---|---|---|
| Windows apps | Local Administrator Password Solution | no-fix |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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