CVSS 3.1 Score 8.8 of 10 (high)


Published Dec 19, 2023
Updated: Feb 2, 2024


CVE-2023-6863 is a vulnerability that affects Firefox ESR < 115.6, Thunderbird < 115.6, and Firefox < 121. It is a high-severity vulnerability with a base score of 8.8 according to NVD. The vulnerability allows for potentially undefined behavior due to a reliance on a dynamic type without a virtual destructor in the ShutdownObserver() function. The vulnerability requires user interaction and can result in high impact on confidentiality and integrity. It has an exploitability score of 2.8 and an impact score of 5.9. The vector string for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H, indicating network attack vector, low attack complexity, no privileges required, required user interaction, and high availability impact.

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