Memory Safety Vulnerabilities in Firefox and Thunderbird by Mozilla

CVE-2025-8040

What is CVE-2025-8040?

Mozilla has identified memory safety bugs across several versions of Firefox and Thunderbird. These vulnerabilities can lead to potential memory corruption, creating a vector for attackers to exploit. Particularly, the affected versions include Firefox ESR 140.0, Thunderbird ESR 140.0, and their standard counterparts within the 140 series. Users are urged to update to the latest versions to mitigate the risk of arbitrary code execution that could arise from this issue. For detailed remediation steps and further insights, refer to Mozilla's security advisories.

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