PatchTheCVEopenj9 vulnerabilities and fixes
Recent CVEs affecting openj9, with upgrade or downgrade steps. 2 tracked.
openj9 has 2 tracked vulnerabilities, 2 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-07-21. Highest priority: CVE-2026-16439 (score 46/100).
- CVE-2026-16439 CRITICAL 9.1 UPGRADE In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow.
- CVE-2026-16441 CRITICAL 9.6 UPGRADE In Eclipse OpenJ9 versions up to 0.60, when executing class files where a previously concrete superclass metho
FAQ
How do I fix openj9 vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is openj9 being exploited right now?
None of the tracked openj9 CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which openj9 CVE should I patch first?
CVE-2026-16439 currently ranks highest (46/100): In Eclipse OpenJ9 versions up to 0.60, using -Xtrace to trace method arguments can lead to buffer underflow..