7.8 High

CVE-2026-121064 Improper input validation in Performance in Google Chrome prior to 157.0.8103.38 allowed a local attacker to potentially…

Description

Improper input validation in Performance in Google Chrome prior to 157.0.8103.38 allowed a local attacker to potentially execute arbitrary code inside the sandbox via a local program. (Chromium security severity: Low)

CVSS 3.1 detail

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitable with local access to the machine, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector: Local
Attack complexity: Low
Privileges required: None
Interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Affected products and versions

Product	Affected versions	Fixed in
Chrome 157.0	earliest → < 157.0.8103.38	157.0.8103.38

References

chromereleases.googleblog.com chromereleases.googleblog.com
issues.chromium.org issues.chromium.org

Timeline

Published November 3, 2026
Last modified November 5, 2026

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