Widely-used Datadog dd-trace-java; RCE risk via RMI deserialization; affects many Java apps.
CVE-2026-33728
RCE via dd-trace-java RMI deserialization on JDK ≤16 with reachable JMX/RMI.
Is CVE-2026-33728 being exploited?
Not confirmed. CVE-2026-33728 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 0.70% probability of exploitation in the next 30 days.
How severe is CVE-2026-33728?
CVE-2026-33728 is rated Critical with a CVSS score of 9.3. 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-2026-33728?
Yes. A fix has been recorded for CVE-2026-33728. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33728 affect?
CVE-2026-33728 affects dd-trace-java (Datadog APM). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33728?
Upgrade to 1.60.3+; or set DD_INTEGRATION_RMI_ENABLED=false.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution on instrumented JVM via deserialization over reachable JMX/RMI; requires -javaagent, exposed port, and gadget library.
Patch when possible
- affected>= 0.40.0 and < 1.60.3
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.