Kiyong

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 154 Firefox ESR versions prior to 115.39 Firefox ESR versions prior to 140.14 Firefox ESR versions prior to 153.1 Thunderbird versions prior to 154 Thunderbird versions prior to 140.14 Thunderbird versions prior to 153.1 **Description** A use-after-free issue exists in the Graphics: Text component. Use-after-free is a memory corruption flaw that occurs when an application continues to use a pointer after it has been freed, which can lead to crashes or arbitrary code execution. **Recommendations** Update Firefox to version 154 or later. Update Firefox ESR to version 115.39 or later. Update Firefox ESR to version 140.14 or later. Update Firefox ESR to version 153.1 or later. Update Thunderbird to version 154 or later. Update Thunderbird to version 140.14 or later. Update Thunderbird to version 153.1 or later.

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 154 Firefox ESR versions prior to 153.1 Thunderbird versions prior to 154 Thunderbird versions prior to 153.1 **Description** A site isolation issue exists within the Graphics: WebRender component. Site isolation is a security mechanism that ensures web pages from different sites are processed in separate processes to prevent one site from accessing data from another. **Recommendations** Update Firefox to version 154. Update Firefox ESR to version 153.1. Update Thunderbird to version 154. Update Thunderbird to version 153.1.

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 150 Firefox ESR versions prior to 140.10 Thunderbird versions prior to 150 Thunderbird versions prior to 140.10 **Description** Privilege escalation exists within the Networking component. **Recommendations** Update Firefox to version 150. Update Firefox ESR to version 140.10. Update Thunderbird to version 150. Update Thunderbird to version 140.10.