Improper Isolation or Compartmentalization Affecting Firefox-ESR package, versions [,115.21.1)[116,128.8.1)
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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- published6 Apr 2025
- disclosed26 Mar 2025
- creditAndrew McCreight
Introduced: 26 Mar 2025
NewCVE-2025-2857 (opens in a new tab)How to fix?
Upgrade Firefox-ESR to version 115.21.1, 128.8.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Isolation or Compartmentalization in IPC handling, which allows a child process to expose a handle from its parent process that enables sandbox escape.
Note: This vulnerability is only exploitable on Windows.