GoogleCVE-2026-91734

Google Chrome: improper authorization

High7.4CVE-2026-91734 · Published Sep 15, 2026 · updated Sep 17, 2026

Incorrect authorization in Core in Google Chrome on on Windows prior to 153.0.8010.47 allowed a local attacker to execute arbitrary code outside the sandbox via a local program. (Chromium security severity: High)

Google advisory

Affected versions

Package	Affected	Fixed in
Chrome Product	>= 153.0.8010.47, < 153.0.8010.47	153.0.8010.47

Details and references

CVSS 3.1: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity from: CISA (its enrichment of the CVE record)
Weakness: CWE-863

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All Google

Date	Advisory	Severity	Fixed in
Sep 15	Google Chrome: race condition High8.3Sep 15 CVE-2026-91743153.0.8010.47	High8.3	153.0.8010.47
Sep 15	Google Chrome: race condition Medium5.3Sep 15 CVE-2026-91744153.0.8010.47	Medium5.3	153.0.8010.47
Sep 15	Google Chrome: use after free High8.8Sep 15 CVE-2026-91745153.0.8010.47	High8.8	153.0.8010.47
Sep 15	Google Chrome: integer overflow Medium4.3Sep 15 CVE-2026-91746153.0.8010.47	Medium4.3	153.0.8010.47
Sep 15	Google Chrome: use after free Low3.1Sep 15 CVE-2026-91747153.0.8010.47	Low3.1	153.0.8010.47
Sep 15	Google Chrome: race condition High8.3Sep 15 CVE-2026-91748153.0.8010.47	High8.3	153.0.8010.47

Affected versions

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