---
id: CVE-2026-105923
title: Null-pointer dereference in QTriangulator reachable through VectorImage
summary: >-
  A malicious SVG can trigger an integer overflow which in turn triggers a
  null-pointer dereference in VectorImage QML Type.
severity: medium
cvss: 4
cvssVector: >-
  CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green
cvssSource: cna
cwe:
  - CWE-476
  - CWE-190
vendor: qt
product: Qt
affected:
  - Qt >= 6.8.0 < 6.8.9
  - Qt >= 6.9.0 < 6.11.3
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-29T19:10:08.181222Z'
published: '2026-10-21'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T19:10:32.263Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-105923'
references:
  - url: 'https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products'
    label: 'Qt Wiki: List of known vulnerabilities in Qt products'
  - url: 'https://codereview.qt-project.org/c/qt%2Fqtbase/+/762279'
    label: dev patch (qtbase)
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105923.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-105923'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2558168'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-105923'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105923'
  - url: 'https://access.redhat.com/errata/RHSA-2026:89193'
tags:
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.0012
epssPercentile: 0.01846
patched:
  - hardened_images
scores:
  cna: 4
  vendor: 5.5
ingestedAt: '2026-10-21T09:46:15.393Z'
---

## Overview

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.

## Affected

- `Qt >= 6.8.0 < 6.8.9`
- `Qt >= 6.9.0 < 6.11.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:89193** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:89193)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 10 · no fix planned: Red Hat Enterprise Linux 10 · updated 2026-10-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105923.json)