Should you update to Microsoft Edge 153.0.4234.49?
No: install Microsoft Edge 156.0.4314.58 instead. Microsoft Edge 153.0.4234.49 is a security update Microsoft released on 21 Sep 2026 for Mac and Windows. It fixes 1 security flaw.[1] None of them is known to be used in attacks.
It has since been replaced by Microsoft Edge 154.0.4258.37, released 24 Sep 2026, which includes all of its fixes.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 153.0.4234.49, so there’s no reason to stop at this one. Software Update offers the newest version your device can run.
Is Microsoft Edge 153.0.4234.49 still safe?
Not any more. The 13 updates since, up to Microsoft Edge 156.0.4314.58, fix 865 security flaws that Microsoft Edge 153.0.4234.49 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 1 security flaw.[1] Microsoft doesn’t rate them by severity. They are:
| Flaw | Severity | What Microsoft calls it |
|---|---|---|
CVE-2026-93372 | Not rated | Chromium CVE-2026-93372: Buffer overflow in WebGL |
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 154.0.4258.37 or later.
153.0.4234.48 vs 153.0.4234.49
Microsoft Edge 153.0.4234.48, released 18 Sep 2026, fixed 14 security flaws. Microsoft Edge 153.0.4234.49 fixes 1 security flaw and includes the fixes before it, so going straight to 153.0.4234.49 gets you both.
- Before: Microsoft Edge 153.0.4234.48, 18 Sep 2026, 14 security flaws
- After: Microsoft Edge 154.0.4258.37, 24 Sep 2026, 114 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, September 21, 2026”, 21 Sep 2026.