Affects Oracle Fusion Middleware JDeveloper—a widely used enterprise product. Network-exploitable remote takeover can disrupt applications and services across organizations.
CVE-2026-83306
Network-accessible remote takeover of Oracle JDeveloper.
Is CVE-2026-83306 being exploited?
Not confirmed. CVE-2026-83306 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.
How severe is CVE-2026-83306?
CVE-2026-83306 is rated High with a CVSS score of 8.8. 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-2026-83306?
Not known from our data. No patch reference has been recorded for CVE-2026-83306, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-83306 affect?
CVE-2026-83306 affects Oracle JDeveloper 12.2.1.4.0, Oracle JDeveloper 14.1.2.0.0, Oracle Fusion Middleware Resource Catalog Services. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-83306?
Patch ASAP; if unavailable, restrict/disable HTTP access to JDeveloper, isolate the service, and rotate credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Low-privileged attacker over HTTP can remotely compromise Oracle JDeveloper, enabling data theft, integrity loss, and service disruption (full takeover).
Immediate action required
- affected12.2.1.4.0
- affected14.1.2.0.0
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.