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No exploitation reportedFix available

CVE-2018-12547

No exploitation reported by the sources we read.

  • Published2019-02-11
  • WeaknessCWE-119 · CWE-20

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2019-02-1115:29CVE publishedNVD

Versions per branch

NVD
Redhat enterprise linux desktop
BranchAffectedFixed in
6.0= 6.0no fix published
7.0= 7.0no fix published
Redhat enterprise linux server
BranchAffectedFixed in
6.0= 6.0no fix published
7.0= 7.0no fix published
Redhat enterprise linux workstation
BranchAffectedFixed in
6.0= 6.0no fix published
7.0= 7.0no fix published

2 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • java-1.7.1-ibmRed Hat:rhel_extras:7all versions · fixed in 1:1.7.1.4.40-1jpp.1.el7and 5 other packages
  • java-1.7.1-ibmRed Hat:rhel_extras:6all versions · fixed in 1:1.7.1.4.40-1jpp.1.el6_10and 5 other packages
  • java-1.8.0-ibmRed Hat:rhel_extras:7all versions · fixed in 1:1.8.0.5.30-1jpp.1.el7and 5 other packages
  • java-1.8.0-ibmRed Hat:rhel_extras:6all versions · fixed in 1:1.8.0.5.30-1jpp.1.el6_10and 5 other packages
  • java-1.8.0-ibmRed Hat:network_satellite:5.8::el6all versions · fixed in 1:1.8.0.5.30-1jpp.1.el6_10and 1 other package
  • java-1.8.0-ibmRed Hat:enterprise_linux:8::supplementaryall versions · fixed in 1:1.8.0.5.35-3.el8_0and 7 other packages

Vendor advisories

  • CVE-2018-12547 Red Hat Product Security201 products fixed

    JDK: buffer overflow in jio_snprintf() and jio_vsnprintf()

  • RHSA-2019:1238 Red Hat Product Security22 products fixed

    Red Hat Security Advisory: java-1.8.0-ibm security update

  • RHSA-2019:0640 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: java-1.8.0-ibm security update

  • RHSA-2019:0473 Red Hat Product Security37 products fixed

    Red Hat Security Advisory: java-1.7.1-ibm security update

  • RHSA-2019:0472 Red Hat Product Security38 products fixed

    Red Hat Security Advisory: java-1.8.0-ibm security update

  • RHSA-2019:0474 Red Hat Product Security50 products fixed

    Red Hat Security Advisory: java-1.7.1-ibm security update

1 more advisory

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2019:1238 · 22 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of IBM Java must be restarted for this update to take effect.
  2. Vendor fix Red Hat Product Security RHSA-2019:0640 · 4 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 For this update to take effect, Red Hat Satellite must be restarted ("/usr/sbin/rhn-satellite restart"). All running instances of IBM Java must be res…

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.09.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • CNAweakness (CWE)CWE-20known since 2026-10-23
  • NVDweakness (CWE)CWE-119read 2026-10-23
  • FIRST EPSSEPSS score2.7 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2019-02-11
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-5qhh-4q6m-8w7h

Frequently asked questions

What is CVE-2018-12547?

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.

Is CVE-2018-12547 actively exploited?

Active exploitation of CVE-2018-12547 has not been confirmed. Its EPSS score was 2.7% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-12547?

CVE-2018-12547 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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