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Critical severityNVD Advisory· Published Oct 16, 2025· Updated Jul 29, 2026

CVE-2025-6338

CVE-2025-6338

Description

There is an incomplete cleanup vulnerability in Qt Network's Schannel support on Windows which can lead to a Denial of Service over a long period.

This issue affects Qt from 5.15.0 through 6.8.3, from 6.9.0 before 6.9.2.

Affected products

2

Qt/Qtbaseinferred
Range: >=5.15.0,<=6.8.3,>=6.9.0,<6.9.2
Qt/Qt Networkllm-fuzzy
Range: 5.15.0-6.8.3, 6.9.0-6.9.2

Patches

Vulnerability mechanics

References

1

codereview.qt-project.org/c/qt/qtbase/+/651495nvd

News mentions

0

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