Integer overflow in Mozilla Firefox - CVE-2025-49710
Published: June 10, 2025
Vulnerability identifier: #VU110701
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-2025-49710
CWE-ID: CWE-190
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 integer overflow in OrderedHashTable. A remote attacker can trick the victim into visiting a specially crafted web page, trigger an integer overflow 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
How to mitigate CVE-2025-49710
Install updates from vendor's website.
Mozilla Firefox - update to 139.0.4