CVE-2025-6338
Possible denial of service with multiple incoming connections to a Schannel based server with a TLS backend
CVSS Score
0.0
EPSS Score
0.4%
EPSS Percentile
35th
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.
| CWE | CWE-459 |
| Vendor | qt |
| Product | qt |
| Published | Oct 16, 2025 |
| Last Updated | Jul 29, 2026 |
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Affected Versions
Qt / Qt
5.15.0 ≤ 6.8.3 6.9.0 < 6.9.2