Microsoft Edge WebView2 Runtime 156.0.4314.56
Microsoft Edge WebView2 Runtime 156.0.4314.56, released October 29, 2026, fixes 47 CVEs in Microsoft Edge WebView2 Runtime. None of them is reported as exploited. Patch Radar priority: Urgent. 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Superseded.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 47 CVEs
Applies to
| Product | Version |
|---|---|
| Microsoft Edge WebView2 Runtime | 156.0.4314.56 |
CVEs this fix closes
| Priority | CVE | Title | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|
| Urgent | CVE-2026-118306 | Chromium: CVE-2026-118306 Memory corruption in FileSystem | 9.6 | 0.0037 | None reported |
| Urgent | CVE-2026-118348 | Chromium: CVE-2026-118348 Improper input validation in Skia | 9.6 | 0.0034 | None reported |
| Urgent | CVE-2026-118331 | Chromium: CVE-2026-118331 Improper input validation in FileAPI | 8.8 | 0.0034 | None reported |
| Urgent | CVE-2026-118344 | Chromium: CVE-2026-118344 Use after free in Layout | 8.8 | 0.0034 | None reported |
| High | CVE-2026-118305 | Chromium: CVE-2026-118305 Memory corruption in Turbolev | 9.6 | 0.0040 | None reported |
| High | CVE-2026-118358 | Chromium: CVE-2026-118358 Memory corruption in WebAudio | 8.8 | 0.0036 | None reported |
| High | CVE-2026-118330 | Chromium: CVE-2026-118330 Use after free in Browser | 8.8 | 0.0033 | None reported |
| High | CVE-2026-118307 | Chromium: CVE-2026-118307 Use after free in Paint | 8.8 | 0.0033 | None reported |
| High | CVE-2026-118317 | Chromium: CVE-2026-118317 Memory corruption in HTML | 8.8 | 0.0032 | None reported |
| High | CVE-2026-118339 | Chromium: CVE-2026-118339 Use after free in Animation | 8.8 | 0.0032 | None reported |
| High | CVE-2026-118308 | Chromium: CVE-2026-118308 Use after free in SVG | 9.6 | 0.0031 | None reported |
| High | CVE-2026-118310 | Chromium: CVE-2026-118310 Improper input validation in Views | 9.6 | 0.0031 | None reported |
| High | CVE-2026-118316 | Chromium: CVE-2026-118316 Improper input validation in V8 | 9.6 | 0.0030 | None reported |
| High | CVE-2026-118332 | Chromium: CVE-2026-118332 Improper input validation in Compositing | 9.6 | 0.0030 | None reported |
| High | CVE-2026-118342 | Chromium: CVE-2026-118342 Out of bounds write in Editing | 9.6 | 0.0030 | None reported |
| High | CVE-2026-118355 | Chromium: CVE-2026-118355 Improper input validation in Command | 9.6 | 0.0030 | None reported |
| High | CVE-2026-118315 | Chromium: CVE-2026-118315 Improper input validation in SVG | 8.8 | 0.0029 | None reported |
| High | CVE-2026-118350 | Chromium: CVE-2026-118350 Use after free in Turbolev | 8.8 | 0.0029 | None reported |
| High | CVE-2026-118357 | Chromium: CVE-2026-118357 Use after free in FileSystem | 8.8 | 0.0028 | None reported |
| High | CVE-2026-118359 | Chromium: CVE-2026-118359 Memory corruption in V8 | 8.8 | 0.0028 | None reported |
| High | CVE-2026-118304 | Chromium: CVE-2026-118304 Improper input validation in SVG | 8.8 | 0.0028 | None reported |
| High | CVE-2026-118311 | Chromium: CVE-2026-118311 Memory corruption in Media | 8.8 | 0.0028 | None reported |
| High | CVE-2026-118313 | Chromium: CVE-2026-118313 Use after free in Video | 8.8 | 0.0028 | None reported |
| High | CVE-2026-118345 | Chromium: CVE-2026-118345 Use after free in PDFium | 8.8 | 0.0027 | None reported |
| High | CVE-2026-118340 | Chromium: CVE-2026-118340 Memory corruption in Skia | 9.6 | 0.0027 | None reported |
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