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Vulnerability record · CVE-2018-12547 · published 11 February 2019

CVE-2018-12547: Eclipse openj9 improper input validation vulnerability

Eclipse · Openj9

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.

9.8 CVSS 3.0 Critical EPSS 2.7% · top 14.4% CWE-20 · Improper input validationCWE-119 · Memory buffer overflow
9.8CVSS 3.0 base score, v2 7.5
2.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
14References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2019:0469 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0472 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0473 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0474 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0640 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1238
https://bugs.eclipse.org/bugs/show_bug.cgi?id=543659 ExploitIssue TrackingVendor Advisory
https://access.redhat.com/errata/RHSA-2019:0469 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0472 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0473 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0474 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0640 Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:1238
https://bugs.eclipse.org/bugs/show_bug.cgi?id=543659 ExploitIssue TrackingVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-12547), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.