CVE-2018-19873: Canonical Ubuntu Linux

Critical severity, CVSS 9.8. EPSS: 3.4% chance of exploitation in the next 30 days.

An issue was discovered in Qt before 5.11.3. QBmpHandler has a buffer overflow via BMP data.

Affected products

• Canonical Ubuntu Linux: version 16.04 only; version 18.04 only; version 18.10 only
• Debian Debian Linux: version 8.0 only; version 9.0 only
• Opensuse Backports: version sle-15 only
• Opensuse Leap: version 15.1 only; version 15.2 only; version 42.3 only
• Qt Qt: up to and including 5.5.1; from 5.7.0, up to and including 5.8.0; from 5.10.0, before 5.11.3 (fixed in 5.11.3)

Published 2018-12-26. Last modified 2026-06-17.