Is CVE-2026-22208 actively exploited?

No active exploitation of CVE-2026-22208 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-22208 be exploited remotely?

Yes. CVE-2026-22208 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-22208?

CVE-2026-22208 has a CVSS score of 9.6 (CRITICAL) and an EPSS exploitation probability of 0.18%.

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CRITICAL

CVE-2026-22208

CWE-749Published: February 17, 2026· Updated: Feb 18, 2026

9.6

CVSS v3.1

EPSS:0.17%probability of exploitation in 30 daysPercentile:38.2th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-22208 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.