# CVE-2026-83408

Remote code execution in Oracle GraalVM compiler allowing full takeover

- Page: https://www.vulneraibility.com/cve/CVE-2026-83408
- CVSS: 8.1
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 0.42% (percentile 36.4)
- CISA SSVC: exploitation none, automatable no, technical impact total (assessed 2026-09-21)
- Weakness: CWE-94
- Published: 2026-09-15

## Affected versions

- Oracle Corporation Oracle GraalVM for JDK, Oracle GraalVM: affected Oracle GraalVM for JDK 17:23.0.13.1; Oracle GraalVM for JDK 21:23.1.12.1; Oracle GraalVM:25.0.4.1

A version outside these ranges is not a statement that it is unaffected.

## Impact

Remote code execution via HTTP enabling full GraalVM compromise, data exfiltration, integrity loss and service disruption

## Action

Patch when possible

## Recommendation

Apply vendor updates when available; restrict network access to GraalVM HTTP endpoints

## References

- [advisory] https://www.oracle.com/security-alerts/cspusep2026.html

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.