Should you update to Microsoft Edge 156.0.4314.56?
No: install Microsoft Edge 156.0.4314.58 instead. Microsoft Edge 156.0.4314.56 is a security update Microsoft released on 29 Oct 2026 for Mac and Windows. It fixes 52 security flaws, 4 rated critical and 46 important by Microsoft.[1] None of them is known to be used in attacks.
It has since been replaced by Microsoft Edge 156.0.4314.58, released 30 Oct 2026, which includes all of its fixes. If you’re on an older version, install that instead.
Should you update?
No: install Microsoft Edge 156.0.4314.58 instead. Microsoft Edge 156.0.4314.58 came out on 30 Oct 2026 and includes every fix in Microsoft Edge 156.0.4314.56, so there’s no reason to stop at this one. Software Update offers the newest version your device can run.
Is Microsoft Edge 156.0.4314.56 still safe?
Not any more. Microsoft Edge 156.0.4314.58 fixes 21 security flaws that Microsoft Edge 156.0.4314.56 doesn’t, and each became public the day its fix shipped. Installing it is safe: get it only from Edge’s own About page (Edge updates itself; there’s nothing to download from a website), never from a link in an email, text or pop-up.
What it fixes
Microsoft lists 52 security flaws, 4 rated critical and 46 important by Microsoft.[1] The 50 critical and important ones are:
| Flaw | Severity | What Microsoft calls it |
|---|---|---|
CVE-2026-118306 | Critical | Chromium: CVE-2026-118306 Memory corruption in FileSystem |
CVE-2026-118331 | Critical | Chromium: CVE-2026-118331 Improper input validation in FileAPI |
CVE-2026-118344 | Critical | Chromium: CVE-2026-118344 Use after free in Layout |
CVE-2026-118348 | Critical | Chromium: CVE-2026-118348 Improper input validation in Skia |
CVE-2026-118304 | Important | Chromium: CVE-2026-118304 Improper input validation in SVG |
CVE-2026-118305 | Important | Chromium: CVE-2026-118305 Memory corruption in Turbolev |
CVE-2026-118307 | Important | Chromium: CVE-2026-118307 Use after free in Paint |
CVE-2026-118308 | Important | Chromium: CVE-2026-118308 Use after free in SVG |
CVE-2026-118309 | Important | Chromium CVE-2026-118309: Incorrect reference resolution |
CVE-2026-118310 | Important | Chromium: CVE-2026-118310 Improper input validation in Views |
CVE-2026-118311 | Important | Chromium: CVE-2026-118311 Memory corruption in Media |
CVE-2026-118313 | Important | Chromium: CVE-2026-118313 Use after free in Video |
CVE-2026-118314 | Important | Chromium CVE-2026-118314: Incorrect reference resolution |
CVE-2026-118315 | Important | Chromium: CVE-2026-118315 Improper input validation in SVG |
CVE-2026-118316 | Important | Chromium: CVE-2026-118316 Improper input validation in V8 |
CVE-2026-118317 | Important | Chromium: CVE-2026-118317 Memory corruption in HTML |
CVE-2026-118318 | Important | Chromium: CVE-2026-118318 Improper access control in V8 |
CVE-2026-118319 | Important | Chromium: CVE-2026-118319 Memory corruption in Skia |
CVE-2026-118320 | Important | Chromium: CVE-2026-118320 Memory corruption in V8 |
CVE-2026-118321 | Important | Chromium CVE-2026-118321: Use after free |
CVE-2026-118322 | Important | Chromium: CVE-2026-118322 Memory corruption in ANGLE |
CVE-2026-118327 | Important | Chromium: CVE-2026-118327 Memory corruption in Media |
CVE-2026-118328 | Important | Chromium: CVE-2026-118328 Improper input validation in WebRTC |
CVE-2026-118329 | Important | Chromium: CVE-2026-118329 Improper input validation in ANGLE |
CVE-2026-118330 | Important | Chromium: CVE-2026-118330 Use after free in Browser |
CVE-2026-118332 | Important | Chromium: CVE-2026-118332 Improper input validation in Compositing |
CVE-2026-118333 | Important | Chromium: CVE-2026-118333 Missing authorization in Video |
CVE-2026-118334 | Important | Chromium: CVE-2026-118334 Use after free in ImageCapture |
CVE-2026-118335 | Important | Chromium: CVE-2026-118335 Improper input validation in Metrics |
CVE-2026-118336 | Important | Chromium: CVE-2026-118336 Improper input validation in Headless |
| and 20 more | ||
How to update, and how long it takes
A minute or two. Edge restarts and reopens your tabs.
- Open Edge and click the three dots (…) at the top right.Choose Help and feedback, then About Microsoft Edge.
- Let it download the update.Edge checks as soon as that page opens. When it’s done, click Restart.
To check it worked: Three dots (…) → Help and feedback → About Microsoft Edge: the version is under the name, e.g. 157.0.4341.42. It should say 156.0.4314.58 or later.
156.0.4314.50 vs 156.0.4314.56
Microsoft Edge 156.0.4314.50, released 27 Oct 2026, fixed 1 security flaw. Microsoft Edge 156.0.4314.56 fixes 52 security flaws and includes the fixes before it, so going straight to 156.0.4314.56 gets you both.
- Before: Microsoft Edge 156.0.4314.50, 27 Oct 2026, 1 security flaw
- After: Microsoft Edge 156.0.4314.58, 30 Oct 2026, 21 security flaws
- Microsoft Edge updates, every release and the latest version
- Updates, the latest version of everything HARD tracks
References
- ^ Microsoft. “Microsoft Edge security release notes, October 29, 2026”, 29 Oct 2026.