CVE-2020-12267: Qt

Critical severity, CVSS 9.8. EPSS: 2.4% chance of exploitation in the next 30 days.

setMarkdown in Qt before 5.14.2 has a use-after-free related to QTextMarkdownImporter::insertBlock.

Affected products

• Qt Qt: version 5.14.1 only

Published 2020-04-27. Last modified 2026-06-17.