Petr Cerny

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 53 Firefox ESR versions prior to 52.1 Firefox ESR versions prior to 45.9 Thunderbird versions prior to 52.1 **Description** The issue is related to a buffer overflow in memory, which can be exploited by a remote attacker to gain unauthorized access to information, compromising its integrity and availability. **Recommendations** For Firefox versions prior to 53, update to version 53 or later. For Firefox ESR versions prior to 52.1, update to version 52.1 or later. For Firefox ESR versions prior to 45.9, update to version 45.9 or later. For Thunderbird versions prior to 52.1, update to version 52.1 or later.