# CVE-2026-16439

## Summary

- **CVE ID:** CVE-2026-16439
- **Severity:** MEDIUM
- **CVSS Score:** 5.8 (CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:A/VC:N/VI:H/VA:H/SC:N/SI:L/SA:L)
- **CWE:** CWE-124
- **Published:** Jul 21, 2026
- **Last Modified:** Jul 24, 2026

## Description

In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.

## Affected Products

- Eclipse Foundation — OpenJ9 (0.8.0)
- Eclipse Foundation — OpenJ9 (0)
- Eclipse Foundation — OpenJ9 (0.60.0)

## References

- [CNA](https://github.com/eclipse-openj9/openj9/pull/24394)
- [CNA](https://gitlab.eclipse.org/security/cve-assignment/-/work_items/192)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 15.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._