What is CVE-2026-16441?

CVE-2026-16441 is a critical-severity vulnerability in Eclipse Openj9, classified under CWE-758. CVSS score: 9.6/10. Published 2026-07-21.

How severe is CVE-2026-16441?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Vulnerability in Eclipse Openj9

CVE-2026-16441

In Eclipse OpenJ9 versions up to 0.60, when executing class files where a previously concrete superclass method has been recompiled as abstract, execution is incorrectly delegated to an interface default method.

EPSS: 0.003 (20.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Eclipse Openj9
Eclipse Foundation Openj9 — versions 0.8.0, 0, 0.60.0

Weakness classification (CWE)

CWE-758

References

emo@eclipse.org (Broken Link)
emo@eclipse.org (Patch, Issue Tracking)
emo@eclipse.org (Broken Link)

Frequently asked questions

What is CVE-2026-16441?: CVE-2026-16441 is a critical-severity vulnerability in Eclipse Openj9, classified under CWE-758. CVSS score: 9.6/10. Published 2026-07-21.
How severe is CVE-2026-16441?: Critical severity. CVSS v3 base score is 9.6 out of 10.