CVSS 3.1 Score 9.8 of 10 (high)


Published Dec 24, 2023
Updated: Jan 4, 2024
CWE ID 190


CVE-2023-51714 is a critical vulnerability discovered in the HTTP2 implementation in Qt versions before 5.15.17, 6.x before 6.2.11, 6.3.x through 6.5.x before 6.5.4, and 6.6.x before 6.6.2. The vulnerability affects various products, including i0tey9, i0tey8, i0tey_, and others listed in the affected_products field. This vulnerability is related to an incorrect HPack integer overflow check in network/access/http2/hpacktable.cpp file. It has a CVSSv3 base score of 9.8 (Critical) and poses a high risk to organizations as it can be exploited remotely without requiring any privileges or user interaction, potentially leading to confidentiality and integrity impacts on the affected systems. The recommended remediation is to update Qt to version 5.15.17 or newer, 6.x to version 6.2.11 or newer, or upgrade to the latest available version within the affected Qt branches to mitigate this vulnerability (source:

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