Buffer overflow in Firefox for Android and Mozilla Firefox - CVE-2025-5272
Published: May 27, 2025
Vulnerability identifier: #VU109881
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-2025-5272
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 when processing HTML content. 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
Firefox for Android
Mozilla Firefox
Ubuntu
Mozilla Thunderbird
thunderbird (Ubuntu package)
Mozilla Firefox
Ubuntu
Mozilla Thunderbird
thunderbird (Ubuntu package)
How to mitigate CVE-2025-5272
Install updates from vendor's website.
Firefox for Android - update to 139.0
Mozilla Firefox - update to 139.0
Mozilla Thunderbird - update to 139.0
thunderbird (Ubuntu package) - update to 1:140.7.1+build1-0ubuntu0.22.04.1
Mozilla Firefox - update to 139.0
Mozilla Thunderbird - update to 139.0
thunderbird (Ubuntu package) - update to 1:140.7.1+build1-0ubuntu0.22.04.1