CVE-2025-14325: JIT miscompilation in the JavaScript Engine: JIT component
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
Other sources
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146 and Firefox ESR < 140.6.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 146 - Upgrade
Upgrade
ubuntu/thunderbirdto a version that resolves this vulnerability.Fixed in 1:140.7.1+build1-0ubuntu0.22.04.1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 140.6 - Upgrade
Upgrade
debian/firefoxto a version that resolves this vulnerability.Fixed in 160.0-1 - Upgrade
Upgrade
debian/firefox-esrto a version that resolves this vulnerability.Fixed in 140.12.0esr-1~deb12u1Fixed in 153.7.0esr-1~deb12u1Fixed in 140.15.0esr-1~deb13u1Fixed in 153.7.0esr-1~deb13u1Fixed in 153.5.1esr-1Fixed in 153.7.0esr-1 - Upgrade
Upgrade
debian/thunderbirdto a version that resolves this vulnerability.Fixed in 1:140.12.0esr-1~deb12u1Fixed in 1:153.7.0esr-1~deb12u1Fixed in 1:140.12.0esr-1~deb13u1Fixed in 1:153.7.0esr-1~deb13u1Fixed in 1:153.5.0esr-1Fixed in 1:153.7.0esr-1 - Upgrade
Upgrade
Firefoxto a version that resolves this vulnerability.Fixed in 146 - Upgrade
Upgrade
Firefox ESRto a version that resolves this vulnerability.Fixed in 140.6 - Upgrade
Upgrade
Thunderbirdto a version that resolves this vulnerability.Fixed in 146 - Upgrade
Upgrade
Thunderbirdto a version that resolves this vulnerability.Fixed in 140.6
Event History
Parent advisories
This vulnerability appears in the following advisories.
Peer vulnerabilities
Found alongside the following vulnerabilities.
Frequently Asked Questions
What is the severity of CVE-2025-14325?
CVE-2025-14325 is considered a high severity vulnerability due to its potential for exploitation.
How do I fix CVE-2025-14325?
To fix CVE-2025-14325, update to Firefox version 146 or later and Firefox ESR version 140.6 or later.
What components are affected by CVE-2025-14325?
CVE-2025-14325 affects the Just-In-Time (JIT) compilation component of the JavaScript engine in Firefox.
Which versions of Firefox are vulnerable to CVE-2025-14325?
Firefox versions prior to 146 and Firefox ESR versions prior to 140.6 are vulnerable to CVE-2025-14325.
What is the impact of CVE-2025-14325?
The impact of CVE-2025-14325 can lead to remote code execution, potentially allowing an attacker to execute arbitrary code on the user's system.