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CVE-2025-2857

Medienbericht

Incorrect handle could lead to sandbox escapes

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Mozilla ≫ Firefox SwEdition- Version < 136.0.4
Mozilla ≫ Firefox SwEditionesr Version < 115.21.1
Mozilla ≫ Firefox SwEditionesr Version >= 128.1.0 < 128.8.1
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.89% 0.77
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 10 3.9 6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE-668 Exposure of Resource to Wrong Sphere

The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.

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VulnDex Intel
Media Report
09.08.2025 11:36
https://issues.chromium.org/issues/405143032
Permissions Required
https://bugzilla.mozilla.org/show_bug.cgi?id=1956398
Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-19/
Vendor Advisory
https://www.cve.org/CVERecord?id=CVE-2025-2783
Third Party Advisory