CVSS 3.1 Score 7.5 of 10 (high)


Published Aug 1, 2023
Updated: Sep 11, 2023


CVE-2023-4051 is a cyber vulnerability that affects Firefox versions prior to 116, Firefox ESR versions prior to 115.2, and Thunderbird versions prior to 115.2. This vulnerability allows a website to obscure the full screen notification by using the file open dialog, potentially leading to user confusion and spoofing attacks. The vulnerability has a base severity rating of HIGH with a base score of 7.5 according to NIST. The exploitability score is 3.9, and it requires no privileges or user interaction. The attack vector is through the network, and it has a high integrity impact but no confidentiality impact. The vulnerability can be remediated by updating affected products to versions 116 or higher for Firefox, and 115.2 or higher for Firefox ESR and Thunderbird.


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