Improper Isolation or Compartmentalization Affecting Firefox-ESR package, versions [,115.23)[120.0b1,128.10)
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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Test your applications- Snyk IDSNYK-UNMANAGED-FIREFOXESR-10231788
- published23 May 2025
- disclosed29 Apr 2025
- creditNika Layzell
Introduced: 29 Apr 2025
CVE-2025-4083 (opens in a new tab)How to fix?
Upgrade Firefox-ESR to version 115.23, 128.10 or higher.
Overview
Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization via the handling of javascript: URI links in cross-origin frames. An attacker can bypass process isolation and execute arbitrary code by crafting malicious links.