CVE-2020-35634: Cgal Computational Geometry Algorithms Library

High severity, CVSS 8.8. EPSS: 2.4% 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<EW>::read_sface() sfh->boundary_entry_objects Sloop_of. A specially crafted malformed file can lead to an out-of-bounds read and type confusion, which could lead to code execution. 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 10.0 only

Published 2021-08-30. Last modified 2026-06-17.