CVSS 3.1 Score 5.4 of 10 (medium)


Published Nov 21, 2023
Updated: Nov 30, 2023
CWE ID 1021


CVE-2023-6206 is a vulnerability that affects Firefox versions prior to 120, Firefox ESR versions prior to 115.5.0, and Thunderbird versions prior to 115.5. It is classified as a medium severity vulnerability with a base score of 5.4 according to NIST. The vulnerability allows an attacker to exploit the black fade animation when exiting fullscreen mode in order to trick users into clicking where a permission grant button would appear. The exploitability score is 2.8, indicating a moderate level of difficulty for exploiting the vulnerability. The impact of this vulnerability is low, as it only affects confidentiality and integrity, with no impact on availability. The attack vector is through the network, and user interaction is required for the exploit to be successful. It has been determined that no privileges are required for exploitation.

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