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CVE-2025-2857

Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code. A compromised...

Basic Information

CVE State
PUBLISHED
Reserved Date
March 27, 2025
Published Date
March 27, 2025
Last Updated
March 28, 2025
Vendor
Mozilla
Product
Firefox, Firefox ESR
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 affects Firefox < 136.0.4, Firefox ESR < 128.8.1, and Firefox ESR < 115.21.1.
Tags
windows

CVSS Scores

CVSS v3.1

10.0 - CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

SSVC Information

Exploitation
none
Automatable
Yes
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2025-03-27 00:00:00 UTC) Source

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1956398 https://issues.chromium.org/issues/405143032 https://www.cve.org/CVERecord?id=CVE-2025-2783 https://www.mozilla.org/security/advisories/mfsa2025-19/

Known Exploited Vulnerability Information

Source Added Date
CVE 2025-03-27 00:00:00 UTC

Timeline

  • Added to KEVIntel

  • CVE ID Reserved

  • CVE Published to Public