CVEvulnerability
CVE-2025-2857
10.0 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2025-03-27
- Last modified
- 2026-10-05
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-668
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.
Affected configurations
• mozilla firefox (< 136.0.4)
• mozilla firefox (< 115.21.1)
• mozilla firefox (>= 128.1.0 < 128.8.1)
Related
Weakness · CWE (1)
- CWE-668 Exposure of Resource to Wrong Sphere weakness
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1956398 Permissions Required
- https://issues.chromium.org/issues/405143032 Permissions Required
- https://www.cve.org/CVERecord?id=CVE-2025-2783 Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2025-19/ Vendor Advisory