CVE-2025-2857
CVE-2025-2857
10.0
CriticalPublished:
Last updated:
Source:security@mozilla.org
Modified
Weakness (CWE)
CVSS Vector
v3.1- Attack Vector
- Network
- Attack Complexity
- Low
- Privileges Required
- None
- User Interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
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.
References
security@mozilla.org
https://bugzilla.mozilla.org/show_bug.cgi?id=1956398security@mozilla.org
https://issues.chromium.org/issues/405143032security@mozilla.org
https://www.cve.org/CVERecord?id=CVE-2025-2783security@mozilla.org
https://www.mozilla.org/security/advisories/mfsa2025-19/