CVE-2025-6338

critical · 9.2

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.

9.2

CVSS

0.4%

EPSS (exploit prob.)

36th

EPSS percentile

2025-10-16

Published

CVSS: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

Weaknesses

CWE-459

References

https://codereview.qt-project.org/c/qt/qtbase/+/651495

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-6338