Should you update to Microsoft Edge 154.0.4258.53?
No: install Microsoft Edge 156.0.4314.58 instead. Microsoft Edge 154.0.4258.53 is a security update Microsoft released on 1 Oct 2026 for Mac and Windows. It fixes 31 security flaws, 1 rated critical and 25 important by Microsoft.[1] None of them is known to be used in attacks.
It has since been replaced by Microsoft Edge 154.0.4258.62, released 5 Oct 2026, which includes all of its fixes.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 154.0.4258.53, so there’s no reason to stop at this one. Software Update offers the newest version your device can run.
Is Microsoft Edge 154.0.4258.53 still safe?
Not any more. The 10 updates since, up to Microsoft Edge 156.0.4314.58, fix 718 security flaws that Microsoft Edge 154.0.4258.53 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 31 security flaws, 1 rated critical and 25 important by Microsoft.[1] The 26 critical and important ones are:
| Flaw | Severity | What Microsoft calls it |
|---|---|---|
CVE-2026-102331 | Critical | Chromium CVE-2026-102331: Buffer overflow |
CVE-2026-102299 | Important | Chromium CVE-2026-102299: Type confusion |
CVE-2026-102300 | Important | Chromium CVE-2026-102300: Uninitialized resource in WebGPU |
CVE-2026-102301 | Important | Chromium CVE-2026-102301: Out of bounds write |
CVE-2026-102302 | Important | Chromium CVE-2026-102302: Buffer overflow |
CVE-2026-102303 | Important | Chromium CVE-2026-102303: Uninitialized resource |
CVE-2026-102304 | Important | Chromium CVE-2026-102304: Use after free |
CVE-2026-102306 | Important | Chromium CVE-2026-102306: Use after free |
CVE-2026-102307 | Important | Chromium CVE-2026-102307: Uninitialized resource |
CVE-2026-102308 | Important | Chromium CVE-2026-102308: Use after free |
CVE-2026-102309 | Important | Chromium CVE-2026-102309: Use after free |
CVE-2026-102311 | Important | Chromium CVE-2026-102311: Uninitialized resource |
CVE-2026-102312 | Important | Chromium CVE-2026-102312: UI misrepresentation |
CVE-2026-102313 | Important | Chromium CVE-2026-102313: Uninitialized resource |
CVE-2026-102315 | Important | Chromium CVE-2026-102315: Uninitialized resource |
CVE-2026-102316 | Important | Chromium CVE-2026-102316: Use after free |
CVE-2026-102317 | Important | Chromium CVE-2026-102317: Improper privilege management |
CVE-2026-102318 | Important | Chromium CVE-2026-102318: Out of bounds read |
CVE-2026-102319 | Important | Chromium CVE-2026-102319: Uninitialized resource |
CVE-2026-102321 | Important | Chromium CVE-2026-102321: Type confusion |
CVE-2026-102323 | Important | Chromium CVE-2026-102323: Type confusion |
CVE-2026-102324 | Important | Chromium CVE-2026-102324: Use after free |
CVE-2026-102325 | Important | Chromium CVE-2026-102325: Uninitialized resource |
CVE-2026-102326 | Important | Chromium CVE-2026-102326: Type confusion |
CVE-2026-102328 | Important | Chromium CVE-2026-102328: Type confusion |
CVE-2026-102329 | Important | Chromium CVE-2026-102329: Cross-site scripting |
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 154.0.4258.62 or later.
154.0.4258.48 vs 154.0.4258.53
Microsoft Edge 154.0.4258.48, released 29 Sep 2026, fixed 2 security flaws. Microsoft Edge 154.0.4258.53 fixes 31 security flaws and includes the fixes before it, so going straight to 154.0.4258.53 gets you both.
- Before: Microsoft Edge 154.0.4258.48, 29 Sep 2026, 2 security flaws
- After: Microsoft Edge 154.0.4258.62, 5 Oct 2026, 13 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 01, 2026”, 1 Oct 2026.