CVE-2021-21897: Debian Linux

High severity, CVSS 8.8. EPSS: 2.9% chance of exploitation in the next 30 days.

A code execution vulnerability exists in the DL_Dxf::handleLWPolylineData functionality of Ribbonsoft dxflib 3.17.0. A specially-crafted .dxf file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Affected products

• Debian Debian Linux: version 9.0 only
• Fedoraproject Extra Packages For Enterprise Linux: version 7.0 only; version 8.0 only
• Fedoraproject Fedora: version 35 only; version 36 only; version 37 only
• Ribbonsoft Dxflib: version 3.17.0 only

Published 2021-09-08. Last modified 2026-06-17.