NULL Pointer Dereference Vulnerability in Qt Core Module
CVE-2026-105924

4.3MEDIUM

Key Information:

Vendor

Qt

Status
Qt
Vendor
CVE Published:
30 October 2026

What is CVE-2026-105924?

A NULL pointer dereference vulnerability exists in the Qt Core module during the conversion of QCborValue to JSON. This flaw can lead to unintended application crashes and may potentially be exploited to compromise the stability and security of applications leveraging the affected module. Users are advised to consult the vendor's advisories for effective mitigation strategies.

Affected Version(s)

Qt 5.12.0 <= 6.8.9

Qt 6.9.0 <= 6.11.2

Qt 6.12.0 < 6.12.1

References

https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_pr...
vendor-advisory
https://codereview.qt-project.org/c/qt/qtbase/+/766809
patch

CVSS V4

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.