# CVE-2025-10728: Qt SVG stack overflow via recursive pattern rendering

Source: https://junglewise.ai/threats/cve-2025-10728-qt-svg-stack-overflow-via-recursive-pattern-rendering  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-10-03. Updated: 2026-07-29  
License: CC BY 4.0 with a link back

CVE-2025-10728 · Severity: info · CVSS 7.5 · Published 2025-10-03

A vulnerability in the Qt SVG rendering library can cause applications to crash when processing a specially crafted image file. This library is widely used by desktop and mobile applications to display vector graphics. An attacker could exploit this by providing a malicious SVG file, leading to a denial-of-service condition where the application stops responding or closes unexpectedly.

Vendors: [Qt Group](https://junglewise.ai/threats/vendors/qt-group).

## Quick answers

**Is CVE-2025-10728 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-10728 being exploited in the wild.

**How severe is CVE-2025-10728?** Informational severity, with a CVSS score of 7.5, published 3 October 2025.

**Which products and versions are affected?** Qt Group SVG 6.x, 5.x.

**Is there a fix for CVE-2025-10728?** 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-2025-10728 attacked?** It is attacked over the network or with local access, in a software library.

**Am I affected by CVE-2025-10728?** Check whether you run Qt Group SVG 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

A stack overflow vulnerability exists in the Qt SVG module's handling of SVG files. The issue occurs when the renderer encounters a <pattern> element that references itself or creates a circular dependency, leading to infinite recursion during the rendering process. An attacker can exploit this by providing a malformed SVG file to any application using the affected Qt library. This results in a crash (Denial of Service) due to stack exhaustion. A patch has been developed for the qtsvg component to detect and prevent these recursive loops.

## Affected products

- Qt Group Qt SVG 6.x, 5.x

## Timeline

- 2025-03-10: advisory: Vulnerability disclosed and patch submitted to Qt Project

## References

- [https://codereview.qt-project.org/c/qt/qtsvg/+/654200](https://codereview.qt-project.org/c/qt/qtsvg/+/654200)