Improper Privilege Management Affecting Firefox package, versions [,155)
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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- published7 Oct 2026
- disclosed7 Oct 2026
- creditUnknown
Introduced: 7 Oct 2026
NewCVE-2026-84117 (opens in a new tab)How to fix?
Upgrade Firefox to version 155 or higher.
Overview
Affected versions of this package are vulnerable to Improper Privilege Management via improper permission handling. An attacker can gain unauthorized access to elevated privileges by exploiting weaknesses in the application's security controls.