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CVE-2026-22208— OpenS100 Portrayal Engine Unrestricted Lua Standard Library Access

Quick assessment

Affected
OpenS100 Project OpenS100
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenS100是S-100Viewer个人开发者的一个IHO S-101 ENC查看器。 OpenS100存在安全漏洞，该漏洞源于未受限制的Lua解释器，可能导致攻击者通过恶意S-100描述目录执行任意代码。

CVSS 9.6 · Critical EPSS 0.96% · P61

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenS100 Project OpenS100 < 753cf294434e8d3961f20a567c4d99151e3b530d affected
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I. Basic Information for CVE-2026-22208

Vulnerability Information
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Vulnerability Title
OpenS100 Portrayal Engine Unrestricted Lua Standard Library Access
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
暴露危险的方法或函数
Source: CVE Program / CVE List V5
Vulnerability Title
OpenS100 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenS100是S-100Viewer个人开发者的一个IHO S-101 ENC查看器。 OpenS100存在安全漏洞，该漏洞源于未受限制的Lua解释器，可能导致攻击者通过恶意S-100描述目录执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenS100 Project OpenS100 0 ~ 753cf294434e8d3961f20a567c4d99151e3b530d -

II. Public POCs for CVE-2026-22208

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III. Intelligence Information for CVE-2026-22208

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Vendor Advisories for CVE-2026-22208 (1)

IV. Related Vulnerabilities

Same product: OpenS100
Same vendor: OpenS100 Project
Same weakness: CWE-749

V. Comments for CVE-2026-22208

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