OpenS100 Project vulnerabilities and threats

CVE-2026-35001 is an integer overflow vulnerability in the OpenS100 project's S-102 Bathymetric Surface parser. It occurs when maliciously crafted S-102 HDF5 files with manipulated grid dimension metadata cause a 32-bit integer multiplication to wrap around, leading to an undersized heap buffer allocation. This results in a heap-based buffer overflow that can crash the application or potentially allow arbitrary code execution when the file is opened.

OpenS100 (the reference implementation S-100 viewer) prior to commit 753cf29 contains a remote code execution vulnerability via an unrestricted Lua interpreter. The Portrayal Engine initializes Lua using luaL_openlibs() without sandboxing or capability restrictions, exposing standard libraries such as 'os' and 'io' to untrusted portrayal catalogues. An attacker can provide a malicious S-100 portrayal catalogue containing Lua scripts that execute arbitrary commands with the privileges of the OpenS100 process when a user imports the catalogue and loads a chart.