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…

PriorityP349critical9.2CVSS 4.0

AVNACLATNPRNUINVCNVINVAHSCNSINSAHEXCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX

EPSS

0.40%

32.2th percentile

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

3 ranges

Vendor	Product	Version range	Fixed in
debian	qt6-base	—	—
the_qt_company	qt	5.15.0 – 6.8.3	—
the_qt_company	qt	>= 6.9.0 < 6.9.2	6.9.2

CVSS provenance

nvdv4.09.2CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

vendor_debian9.2LOW

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