Critical severity10.0NVD Advisory· Published Mar 27, 2025· Updated Apr 13, 2026
CVE-2025-2857
CVE-2025-2857
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 products
2cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*+ 1 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*range: <136.0.4
- cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*range: <115.21.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- www.cve.org/CVERecordnvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2025-19/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
- issues.chromium.org/issues/405143032nvdPermissions Required
News mentions
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