Should you update to Microsoft Edge 152.0.4191.53?
No: install Microsoft Edge 156.0.4314.58 instead. Microsoft Edge 152.0.4191.53 is a security update Microsoft released on 27 Aug 2026 for Mac and Windows. It fixes 303 security flaws, 8 rated critical and 64 important by Microsoft.[1] None of them is known to be used in attacks.
It has since been replaced by Microsoft Edge 152.0.4191.52, released 28 Aug 2026, which includes all of its fixes.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 152.0.4191.53, so there’s no reason to stop at this one. Software Update offers the newest version your device can run.
Is Microsoft Edge 152.0.4191.53 still safe?
Not any more. The 21 updates since, up to Microsoft Edge 156.0.4314.58, fix 1,192 security flaws that Microsoft Edge 152.0.4191.53 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 303 security flaws, 8 rated critical and 64 important by Microsoft.[1] The 72 critical and important ones are:
| Flaw | Severity | What Microsoft calls it |
|---|---|---|
CVE-2026-79012 | Critical | Chromium: CVE-2026-79012 Use after free in Safebrowsing |
CVE-2026-79052 | Critical | Chromium: CVE-2026-79052 Use after free in Aura |
CVE-2026-79054 | Critical | Chromium: CVE-2026-79054 Use after free in Chromecast |
CVE-2026-79121 | Critical | Chromium: CVE-2026-79121 Improper input validation in Chromecast |
CVE-2026-79150 | Critical | Chromium: CVE-2026-79150 Use after free in Views |
CVE-2026-79200 | Critical | Chromium: CVE-2026-79200 Use after free in Aura |
CVE-2026-79224 | Critical | Chromium: CVE-2026-79224 Use after free in Chromecast |
CVE-2026-79290 | Critical | Chromium: CVE-2026-79290 Use after free in Aura |
CVE-2026-66323 | Important | Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability |
CVE-2026-66324 | Important | Microsoft Edge (Chromium-based) Spoofing Vulnerability |
CVE-2026-66798 | Important | Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability |
CVE-2026-70341 | Important | Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability |
CVE-2026-72984 | Important | Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability |
CVE-2026-78895 | Important | Chromium: CVE-2026-78895 Information leak in Paint |
CVE-2026-78899 | Important | Chromium: CVE-2026-78899 Use after free in V8 |
CVE-2026-78900 | Important | Chromium: CVE-2026-78900 Improper input validation in Media |
CVE-2026-78904 | Important | Chromium: CVE-2026-78904 Type confusion in ANGLE |
CVE-2026-78908 | Important | Chromium: CVE-2026-78908 Information leak in Canvas |
CVE-2026-78911 | Important | Chromium: CVE-2026-78911 Incorrect authorization in USB |
CVE-2026-78934 | Important | Chromium: CVE-2026-78934 Race condition in ReadAloud |
CVE-2026-78938 | Important | Chromium: CVE-2026-78938 Type confusion in V8 |
CVE-2026-78939 | Important | Chromium: CVE-2026-78939 Use after free in Chromecast |
CVE-2026-78948 | Important | Chromium: CVE-2026-78948 Buffer overflow in WebGL |
CVE-2026-78952 | Important | Chromium: CVE-2026-78952 Out of bounds write in Crashpad |
CVE-2026-78954 | Important | Chromium: CVE-2026-78954 Incorrect authorization in Extensions |
CVE-2026-78965 | Important | Chromium: CVE-2026-78965 Uninitialized resource in ANGLE |
CVE-2026-78986 | Important | Chromium: CVE-2026-78986 Uninitialized resource in GPU |
CVE-2026-78989 | Important | Chromium: CVE-2026-78989 Out of bounds read in ANGLE |
CVE-2026-79011 | Important | Chromium: CVE-2026-79011 UI misrepresentation in Browser |
CVE-2026-79014 | Important | Chromium: CVE-2026-79014 Race condition in Autofill |
| and 42 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 152.0.4191.52 or later.
151.0.4129.107 vs 152.0.4191.53
Microsoft Edge 151.0.4129.107, released 24 Aug 2026, fixed 7 security flaws. Microsoft Edge 152.0.4191.53 fixes 303 security flaws and includes the fixes before it, so going straight to 152.0.4191.53 gets you both.
- Before: Microsoft Edge 151.0.4129.107, 24 Aug 2026, 7 security flaws
- After: Microsoft Edge 152.0.4191.52, 28 Aug 2026, 1 security flaw
- Microsoft Edge updates, every release and the latest version
- Updates, the latest version of everything HARD tracks
References
- ^ Microsoft. “Microsoft Edge security release notes, August 27, 2026”, 27 Aug 2026.