Access Control Bypass Affecting chromium package, versions [,140.0.7339.80)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published5 Sept 2025
- disclosed3 Sept 2025
- creditNDevTK
Introduced: 3 Sep 2025
NewCVE-2025-9866 (opens in a new tab)How to fix?
Upgrade chromium to version 140.0.7339.80 or higher.
Overview
Affected versions of this package are vulnerable to Access Control Bypass in the Extensions component. An attacker can execute unauthorized scripts or access restricted resources by enticing a user to visit a specially crafted HTML page.