CVE-2025-6338

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
UNKNOWN
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TQtCCNA
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CISA-ADPADP
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Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 12%
Debian logo
Debian Releases
Debian Product
Codename
qt6-base
bookworm
6.4.2+dfsg-10
fixed
trixie
6.8.2+dfsg-9+deb13u1
fixed
forky
6.9.2+dfsg-3
fixed
sid
6.9.2+dfsg-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
qt6-base
questing
not-affected
plucky
not-affected
noble
not-affected
jammy
not-affected
Common Weakness Enumeration
References
https://codereview.qt-project.org/c/qt/qtbase/+/651495