CVSS 3.1 Score 6.5 of 10 (medium)


Published Sep 11, 2023
Updated: Sep 13, 2023
CWE ID 416


CVE-2023-4573 is a vulnerability that affects Firefox versions prior to 117, Firefox ESR versions prior to 102.15, and Thunderbird versions prior to 115.2. The vulnerability occurs when receiving rendering data over IPC `mStream`, which can lead to a use-after-free issue and potentially exploitable crashes. The vulnerability is rated as MEDIUM severity with a base score of 6.5 according to the CVSS v3.1 scoring system. It requires user interaction and can be exploited over a network. The impact of the vulnerability does not affect confidentiality or integrity but could have a high impact on availability.


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