Microsoft Edge WebView2 Runtime 154.0.4258.53
Microsoft Edge WebView2 Runtime 154.0.4258.53, released October 1, 2026, fixes 25 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.
Superseded. The latest Microsoft Edge WebView2 Runtime is 157.0.4341.42, which also fixes every CVE on this page. Install that instead.
Priority of the 25 CVEs
Applies to
| Product | Version |
|---|---|
| Microsoft Edge WebView2 Runtime | 154.0.4258.53 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| High | CVE-2026-102299 | Chromium CVE-2026-102299: Type confusion | 8.8 | 0.0042 | None reported |
| High | CVE-2026-102323 | Chromium CVE-2026-102323: Type confusion | 8.8 | 0.0042 | None reported |
| High | CVE-2026-102306 | Chromium CVE-2026-102306: Use after free | 9.6 | 0.0038 | None reported |
| High | CVE-2026-102302 | Chromium CVE-2026-102302: Buffer overflow | 8.8 | 0.0036 | None reported |
| High | CVE-2026-102321 | Chromium CVE-2026-102321: Type confusion | 8.8 | 0.0034 | None reported |
| High | CVE-2026-102328 | Chromium CVE-2026-102328: Type confusion | 8.8 | 0.0033 | None reported |
| High | CVE-2026-102326 | Chromium CVE-2026-102326: Type confusion | 8.8 | 0.0033 | None reported |
| High | CVE-2026-102304 | Chromium CVE-2026-102304: Use after free | 9.6 | 0.0032 | None reported |
| High | CVE-2026-102308 | Chromium CVE-2026-102308: Use after free | 9.6 | 0.0032 | None reported |
| High | CVE-2026-102309 | Chromium CVE-2026-102309: Use after free | 9.6 | 0.0032 | None reported |
| High | CVE-2026-102316 | Chromium CVE-2026-102316: Use after free | 9.6 | 0.0031 | None reported |
| High | CVE-2026-102301 | Chromium CVE-2026-102301: Out of bounds write | 8.3 | 0.0029 | None reported |
| High | CVE-2026-102324 | Chromium CVE-2026-102324: Use after free | 8.3 | 0.0027 | None reported |
| High | CVE-2026-102325 | Chromium CVE-2026-102325: Uninitialized resource | 9.6 | 0.0023 | None reported |
| High | CVE-2026-102317 | Chromium CVE-2026-102317: Improper privilege management | 8.6 | 0.0011 | None reported |
| Routine | CVE-2026-102313 | Chromium CVE-2026-102313: Uninitialized resource | 4.7 | 0.0028 | None reported |
| Routine | CVE-2026-102300 | Chromium CVE-2026-102300: Uninitialized resource in WebGPU | 4.3 | 0.0028 | None reported |
| Routine | CVE-2026-102310 | Chromium CVE-2026-102310: Missing authorization | 6.5 | 0.0024 | None reported |
| Routine | CVE-2026-102320 | Chromium CVE-2026-102320: Missing authorization | 6.5 | 0.0023 | None reported |
| Routine | CVE-2026-102330 | Chromium CVE-2026-102330: Incorrect authorization | 6.5 | 0.0023 | None reported |
| Routine | CVE-2026-102318 | Chromium CVE-2026-102318: Out of bounds read | 4.7 | 0.0021 | None reported |
| Routine | CVE-2026-102315 | Chromium CVE-2026-102315: Uninitialized resource | 3.4 | 0.0021 | None reported |
| Routine | CVE-2026-102319 | Chromium CVE-2026-102319: Uninitialized resource | 3.4 | 0.0021 | None reported |
| Routine | CVE-2026-102314 | Chromium CVE-2026-102314: UI misrepresentation | 5.4 | 0.0021 | None reported |
| Routine | CVE-2026-102329 | Chromium CVE-2026-102329: Cross-site scripting | 6.1 | 0.0018 | None reported |
Patch Radar data is free to use with attribution. Terms and how to credit it.
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.