Buffer overflow in Mozilla Firefox and Firefox for Android - CVE-2025-11153
Published: October 1, 2025
Vulnerability identifier: #VU116218
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-11153
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in JIT component. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Mozilla Firefox
Firefox for Android
Firefox for Android
How to mitigate CVE-2025-11153
Install updates from vendor's website.
Mozilla Firefox - update to 143.0.3
Firefox for Android - update to 143.0.3
Firefox for Android - update to 143.0.3