CVE-2026-22208
OpenS100 (the reference implementation S-100 viewer) prior to commit 753cf29 contain 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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9.6
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- EPSS probability
- 0.92%
- CWE
- CWE-749, CWE-829
- Published
- 2026-02-17
- Last modified
- 2026-07-14
Affected products
- OpenS100 Project OpenS100
Weakness type
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