CVE-2018-12547: Eclipse OPENJ9

Critical severity, CVSS 9.8. EPSS: 2.7% chance of exploitation in the next 30 days.

In Eclipse OpenJ9, prior to the 0.12.0 release, the jio_snprintf() and jio_vsnprintf() native methods ignored the length parameter. This affects existing APIs that called the functions to exceed the allocated buffer. This functions were not directly callable by non-native user code.

Affected products

• Eclipse OPENJ9: before 0.12.0 (fixed in 0.12.0)
• Red Hat Enterprise Linux Desktop: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Workstation: version 6.0 only; version 7.0 only
• Red Hat Satellite: version 5.8 only

Published 2019-02-11. Last modified 2026-06-17.