What’s Vulnerable › Vulnerabilities

CVE-2026-16439: Eclipse OpenJ9 : Using -Xtrace to trace method arguments can lead to buffer underflow

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-21 · updated 2026-10-24
• Weakness: CWE-124

Description

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

Affected products

• The Eclipse Foundation Eclipse OpenJ9: from 0.8.0 before 0.60.0 — fixed in 0.60.0

How to fix

Upgrade to a fixed version: The Eclipse Foundation Eclipse OpenJ9 0.60.0. Check the vendor advisory for mitigations.

References

• https://github.com/eclipse-openj9/openj9/pull/24394
• https://gitlab.eclipse.org/security/cve-assignment/-/work_items/192

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