CVE-2023-51714
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk61th percentile - higher than 61% of all known CVEs
Summary
In the HTTP2 implementation in Qt before 5.15.17, 6.2.11, 6.5.4, and 6.6.2, there is an incorrect HPack integer overflow check in hpacktable.cpp.
Risk Assessment
This can lead to incorrect HTTP2 behavior, potentially enabling buffer overflow attacks or other errors.
Recommendation
Update Qt to version 5.15.17, 6.2.11, 6.5.4, or 6.6.2 depending on the branch used.
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- CVE-2025-5991Low
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- CVE-2025-5455High
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A symlink attack vulnerability was found in the Qt corelib module on Windows via QFileSystemEngine. The use of GetTempPath API allows manipulation of temporary file paths, potentially leading to unauthorized access and privilege escalation.
Original NVD description (English source)
An issue was discovered in the HTTP2 implementation in Qt 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. network/access/http2/hpacktable.cpp has an incorrect HPack integer overflow check.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS