CVE-2026-16439 — CRITICAL (9.1)

Q: What is CVE-2026-16439?

CVE-2026-16439 is a vulnerability with a CVSS score of 9.1 (CRITICAL). In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.

Q: How severe is CVE-2026-16439?

CVE-2026-16439 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-16439?

Check the references section above for vendor advisories and patch information. Affected products include: Eclipse Openj9.

Vulnerability Description

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

CVSS Score

9.1

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Eclipse	Openj9	>= 0.8.0, < 0.60.0

Related Weaknesses (CWE)

CWE-124

References

https://github.com/eclipse-openj9/openj9/pull/24394Issue TrackingPatch
https://gitlab.eclipse.org/security/cve-assignment/-/work_items/192Broken Link

FAQ

What is CVE-2026-16439?

CVE-2026-16439 is a vulnerability with a CVSS score of 9.1 (CRITICAL). In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.

How severe is CVE-2026-16439?

CVE-2026-16439 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-16439?

Check the references section above for vendor advisories and patch information. Affected products include: Eclipse Openj9.