CVE-2020-28636: Cgal Computational Geometry Algorithms Library

Critical severity, CVSS 9.8. EPSS: 2.9% chance of exploitation in the next 30 days.

A code execution vulnerability exists in the Nef polygon-parsing functionality of CGAL libcgal CGAL-5.1.1. An oob read vulnerability exists in Nef_S2/SNC_io_parser.h SNC_io_parser::read_sloop() slh->twin() An attacker can provide malicious input to trigger this vulnerability.

Affected products

• Cgal Computational Geometry Algorithms Library: version 5.1.1 only
• Debian Debian Linux: version 9.0 only; version 10.0 only
• Fedoraproject Fedora: version 33 only; version 34 only

Published 2021-03-04. Last modified 2026-06-17.