# Microsoft Edge WebView2 Runtime 148.0.3967.83

Microsoft Edge WebView2 Runtime 148.0.3967.83, released May 21, 2026, fixes 13 CVEs in Microsoft Edge WebView2 Runtime. None of them is reported as exploited. Patch Radar priority: High. The latest Microsoft Edge WebView2 Runtime is 157.0.4341.42, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/microsoft.edgewebview2runtime-148.0.3967.83
- Platform: Windows apps
- Released: May 21, 2026
- Priority: High (Closes CVE-2026-9111, high severity)
- CVEs: 13, exploited: 0, on CISA KEV: 0
- Superseded by: [Microsoft Edge WebView2 Runtime 157.0.4341.42](https://patchblox.com/security/data/product/windows-app/microsoft-edge-webview2-runtime.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Edge WebView2 Runtime](https://patchblox.com/security/data/product/windows-app/microsoft-edge-webview2-runtime.md) |  | 148.0.3967.83 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-9111](https://patchblox.com/security/data/cve/CVE-2026-9111.md) | High | Chromium: CVE-2026-9111 Use after free in WebRTC | 8.8 | 0.0080 |  |
| [CVE-2026-9119](https://patchblox.com/security/data/cve/CVE-2026-9119.md) | High | Chromium: CVE-2026-9119 Heap buffer overflow in WebRTC | 8.8 | 0.0054 |  |
| [CVE-2026-9120](https://patchblox.com/security/data/cve/CVE-2026-9120.md) | High | Chromium: CVE-2026-9120 Use after free in WebRTC | 8.8 | 0.0050 |  |
| [CVE-2026-9112](https://patchblox.com/security/data/cve/CVE-2026-9112.md) | High | Chromium: CVE-2026-9112 Use after free in GPU | 8.8 | 0.0040 |  |
| [CVE-2026-9118](https://patchblox.com/security/data/cve/CVE-2026-9118.md) | High | Chromium: CVE-2026-9118 Use after free in XR | 8.8 | 0.0040 |  |
| [CVE-2026-9126](https://patchblox.com/security/data/cve/CVE-2026-9126.md) | High | Chromium: CVE-2026-9124 Insufficient validation of untrusted input in Input | 8.8 | 0.0040 |  |
| [CVE-2026-9114](https://patchblox.com/security/data/cve/CVE-2026-9114.md) | High | Chromium: CVE-2026-9114 Use after free in QUIC | 8.8 | 0.0037 |  |
| [CVE-2026-9121](https://patchblox.com/security/data/cve/CVE-2026-9121.md) | High | Chromium: CVE-2026-9126 Use after free in DOM | 8.8 | 0.0033 |  |
| [CVE-2026-9110](https://patchblox.com/security/data/cve/CVE-2026-9110.md) | Routine | Chromium: CVE-2026-9110 Inappropriate implementation in UI | 4.2 | 0.0034 |  |
| [CVE-2026-9124](https://patchblox.com/security/data/cve/CVE-2026-9124.md) | Routine | Chromium: CVE-2026-9123 Heap buffer overflow in Chromecast | 5.3 | 0.0026 |  |
| [CVE-2026-9115](https://patchblox.com/security/data/cve/CVE-2026-9115.md) | Routine | Chromium: CVE-2026-9115 Insufficient policy enforcement in Service Worker | 4.3 | 0.0022 |  |
| [CVE-2026-9113](https://patchblox.com/security/data/cve/CVE-2026-9113.md) | Routine | Chromium: CVE-2026-9113 Out of bounds read in GPU | 4.3 | 0.0022 |  |
| [CVE-2026-9116](https://patchblox.com/security/data/cve/CVE-2026-9116.md) | Routine | Chromium: CVE-2026-9116 Insufficient policy enforcement in ServiceWorker | 4.3 | 0.0022 |  |

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Data as of 2026-11-11T01:43:54Z 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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