Description

Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code. A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 136.0.4, Firefox ESR 128.8.1, and Firefox ESR 115.21.1.

INFO

Published Date :

2025-03-27T13:27:57.377Z

Last Modified :

2026-04-13T14:30:19.981Z

Source :

mozilla
AFFECTED PRODUCTS

The following products are affected by CVE-2025-2857 vulnerability.

Vendors Products
Mozilla
  • Firefox
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-2857.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1956398 cve-icon cve-icon cve-icon
https://issues.chromium.org/issues/405143032 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-2857 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-2783 cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-2857 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-19/ cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
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Privileges Required
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