Improper Privilege Management Affecting Firefox-ESR package, versions [,140.14)[141.0,153.1)
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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- published29 Aug 2026
- disclosed18 Aug 2026
- creditUnknown
Introduced: 18 Aug 2026
NewCVE-2026-74941 (opens in a new tab)How to fix?
Upgrade Firefox-ESR to version 140.14, 153.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Privilege Management via the CanvasWebGL component. An attacker can gain elevated privileges by exploiting improper handling of WebGL operations.