CVE-2026-22208
RCE in OpenS100 via unrestricted Lua interpreter
Is CVE-2026-22208 being exploited?
Not confirmed. CVE-2026-22208 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.94% probability of exploitation in the next 30 days.
How severe is CVE-2026-22208?
CVE-2026-22208 is rated Critical. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-22208?
Yes. A fix has been recorded for CVE-2026-22208. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-22208 affect?
CVE-2026-22208 affects OpenS100 Portrayal Engine, S-100 viewer. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-22208?
Apply patched build; restrict catalogue sources.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via unsandboxed Lua; malicious catalogue executes commands with OpenS100 privileges.
Patch when possible
- affected< 753cf294434e8d3961f20a567c4d99151e3b530d
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.