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9.2 Critical

CVE-2025-6338 There is an incomplete cleanup vulnerability in Qt Network's Schannel support on Windows which can lead to a Denial of…

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 and versions

Product Affected versions Fixed in
Qt 6.9 6.9.0 → < 6.9.2 6.9.2
Qt 6.8 earliest → < 6.8.4 6.8.4
Qt 5.15 5.15.0 → 6.8.3 No fix stated
Qt 6.9 6.9.0 → < 6.9.2 6.9.2
Qt 6.8 earliest → < 6.8.4 6.8.4
Qt 5.15 5.15.0 → 6.8.3 No fix stated

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