Microsoft Security Response CenterCVE-2026-91726

Chromium CVE-2026-91726: Out of bounds read

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases](https://chromereleases.googleblog.com/2026)) for more information.

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4.7CVSS out of 10Critical severity

Scope

What the vendor says is affected

Microsoft Edge (Chromium-based)

Versions the vendor lists as fixed

153.0.4234.46

Next step

What the vendor recommends

Release Notes

Review the complete instructions on the vendor's site

Timeline

When this advisory changed

Sep 17, 2026 at 9:43 PM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 27, 2026 at 11:11 PM UTC
Added to SecurityAlert
We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-91726View CVSS, KEV, EPSS, and threat context

Source

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Vendor: Microsoft Security Response Center
Advisory ID: CVE-2026-91726
Last source check: Sep 27, 2026 at 11:11 PM UTC

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Your environment

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What the vendor says is affected

Versions the vendor lists as fixed

What the vendor recommends

When this advisory changed

CVEs named in this advisory

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