CVE-2026-39842
OpenRemote RCE in rules engine via JavaScript; non-superusers can gain root.
Is CVE-2026-39842 being exploited?
Not confirmed. CVE-2026-39842 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 0.92% probability of exploitation in the next 30 days.
How severe is CVE-2026-39842?
CVE-2026-39842 is rated Critical with a CVSS score of 9.9. 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-2026-39842?
Yes. A fix has been recorded for CVE-2026-39842. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-39842 affect?
CVE-2026-39842 affects OpenRemote Platform <= 1.21.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-39842?
Upgrade to 1.22.0; review rule permissions
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution with full JVM; root access; file read; env vars including DB creds; cross-tenant data access.
Immediate action required
- affected< 1.22.0
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.