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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.2
- CVSS vector
- 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
- EPSS probability
- 0.40%
- CWE
- CWE-459
- Published
- 2025-10-16
- Last modified
- 2026-07-29
Affected products
- The Qt Company Qt
- The Qt Company Qt
- The Qt Company Qt
- The Qt Company Qt
- Qt Qt
- Qt Qt
- Qt Qt
- Qt Qt
Weakness type
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