CVE-2021-3481: Qt

High severity, CVSS 7.1. EPSS: 0.5% chance of exploitation in the next 30 days.

A flaw was found in Qt. An out-of-bounds read vulnerability was found in QRadialFetchSimd in qt/qtbase/src/gui/painting/qdrawhelper_p.h in Qt/Qtbase. While rendering and displaying a crafted Scalable Vector Graphics (SVG) file this flaw may lead to an unauthorized memory access. The highest threat from this vulnerability is to data confidentiality and the application availability.

Affected products

• Qt Qt: version 5.15.1 only; version 6.0.0 only; version 6.0.2 only; version 6.2.0 only

Published 2022-08-22. Last modified 2026-06-17.