CVE-2025-6338

Oct. 16, 2025, 3:28 p.m.

9.2
Critical

Description

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.

Product(s) Impacted

Vendor Product Versions
Qt
  • Qt
  • 5.15.0-6.8.3, 6.9.0

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-459
Incomplete Cleanup
The product does not properly "clean up" and remove temporary or supporting resources after they have been used.

*CPE(s)

Affected systems and software identified for this CVE.

Type Vendor Product Version Update Edition Language Software Edition Target Software Target Hardware Other Information
a qt qt 5.15.0-6.8.3 / / / / / / /
a qt qt 6.9.0 <6.9.2 / / / / / /

References

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

Tags

CWE-459
a59d8014-47c4-4630-ab43-e1b13cbe58e3
2025-10-16
CVE-2025-6338

CVSS Score

9.2 / 10

CVSS Data - 4.0

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Attack Requirements: NONE
  • Privileges Required: NONE
  • User Interaction: NONE
  • Scope:
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH
  • Exploit Maturity: NOT_DEFINED

    • 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

    View Vector String

Timeline

Published: Oct. 16, 2025, 10:15 a.m.
Last Modified: Oct. 16, 2025, 3:28 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

a59d8014-47c4-4630-ab43-e1b13cbe58e3

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.