Memory Safety Vulnerability in Mozilla's Firefox and Thunderbird Products

CVE-2025-0243

What is CVE-2025-0243?

Multiple memory safety bugs found in Firefox and Thunderbird could potentially be exploited for arbitrary code execution. These vulnerabilities are present in versions of Firefox 133 and earlier, Firefox ESR 128.5 and earlier, Thunderbird 133 and earlier, and Thunderbird ESR 128.5 and earlier. It is critical for users to update to the latest versions (Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird ESR 128.6) to mitigate potential security risks associated with these bugs.

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