CVE-2026-105923: Qt VectorImage integer overflow and null-pointer dereference

CVE-2026-105923 · Severity: info · Published 2026-10-21

Qt's VectorImage QML Type can be triggered by a malicious SVG file to experience an integer overflow followed by a null-pointer dereference, potentially causing application crashes. An attacker could exploit this by providing a crafted SVG to any application using Qt's vector image rendering, resulting in a denial of service.

Technologies: Qt. Vendors: Qt.

Quick answers

Is CVE-2026-105923 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-105923 being exploited in the wild.
How severe is CVE-2026-105923?
Informational severity, published 21 October 2026.
Which products and versions are affected?
Qt <UNKNOWN>.
Is there a fix for CVE-2026-105923?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-105923 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-105923?
Check whether you run Qt at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An integer overflow in the VectorImage QML Type when processing SVG files leads to a null-pointer dereference. The vulnerability is triggered when a malicious SVG file is parsed and rendered. The attack requires no authentication or special privileges and can be exploited via network delivery of a crafted SVG file to an application using the vulnerable component.

Affected products

  • Qt Qt <UNKNOWN>

References

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