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CVE-2018-12547

32
FAUCET Score

CVE-2018-12547 is a critical buffer overflow vulnerability in Eclipse OpenJ9 prior to version 0.12.0, affecting various Eclipse and Red Hat products. The jio_snprintf() and jio_vsnprintf() native methods failed to respect the length parameter, potentially allowing buffer overflows when called by existing APIs. With a CVSS score of 9.8 (Critical), this vulnerability is remotely exploitable with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.12.0CPE matchmatch criteria
cpe:2.3:a:eclipse:openj9:*:*:*:*:*:*:*:*
5.8CPE matchmatch criteria
cpe:2.3:a:redhat:satellite:5.8:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.74%
Probability of exploitation in next 30 days
EPSS Percentile
84.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0274 is in the 75th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: java-1.8.0-ibm-1:1.8.0.5.30-1jpp.1.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: java-1.7.1-ibm-1:1.7.1.4.40-1jpp.1.el6_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 SupplementaryFixed in: java-1.8.0-ibm-1:1.8.0.5.30-1jpp.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 SupplementaryFixed in: java-1.7.1-ibm-1:1.7.1.4.40-1jpp.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: java-1.8.0-ibm-1:1.8.0.5.35-3.el8_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.8Fixed in: java-1.8.0-ibm-1:1.8.0.5.30-1jpp.1.el6_10
View patch

Vendor Advisories (1)

redhatCVE-2018-12547Critical

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

Mar 1, 2019

References

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