Unauthenticated remote takeover (RCE) in Oracle Helidon, part of Oracle Fusion Middleware — high-impact enterprise product likely widely deployed.
CVE-2026-71164
Unauthenticated remote takeover of Oracle Helidon via HTTP (RCE).
Is CVE-2026-71164 being exploited?
Not confirmed. CVE-2026-71164 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 0.47% probability of exploitation in the next 30 days.
How severe is CVE-2026-71164?
CVE-2026-71164 is rated Critical with a CVSS score of 9.8. 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-2026-71164?
Yes. A fix has been recorded for CVE-2026-71164. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-71164 affect?
CVE-2026-71164 affects Oracle Helidon 3.2.18 (Imperative Web Server component). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-71164?
Isolate Helidon, block HTTP access, monitor logs, apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote code execution allowing full compromise of Helidon (C/I/A: High) over HTTP.
Immediate action required
- affected>= 3.0.0 and <= 3.2.17
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.