CVE-2012-4420

Name: CVE-2012-4420
Creator: NVD / NIST
Published: 2019-12-26T21:15:11.087+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.51%

Last modified Jun 16, 2026

CVE-2012-4420 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An information disclosure flaw was found in the way the Java Virtual Machine (JVM) implementation of Java SE 7 as provided by OpenJDK 7 incorrectly initialized integer arrays after memory allocation (in certain circumstances they had nonzero elements right after the allocation). A remote attacker could use this flaw to obtain potentially sensitive information.. EPSS estimates a 4.51% chance of exploitation in the next 30 days.

Description

An information disclosure flaw was found in the way the Java Virtual Machine (JVM) implementation of Java SE 7 as provided by OpenJDK 7 incorrectly initialized integer arrays after memory allocation (in certain circumstances they had nonzero elements right after the allocation). A remote attacker could use this flaw to obtain potentially sensitive information.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

4.51%

90.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Oracle	Jdk	7.0

References

http://www.openwall.com/lists/oss-security/2012/09/13/3Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/55538Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/cve-2012-4420Third Party Advisory
https://bugs.java.com/bugdatabase/view_bug.do?bug_id=7196857Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-4420Issue Tracking, Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/78693Third Party Advisory, VDB Entry
https://www.openwall.com/lists/oss-security/2012/09/12/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/09/13/3Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/55538Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/cve-2012-4420Third Party Advisory
https://bugs.java.com/bugdatabase/view_bug.do?bug_id=7196857Exploit, Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-4420Issue Tracking, Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/78693Third Party Advisory, VDB Entry
https://www.openwall.com/lists/oss-security/2012/09/12/4Mailing List, Third Party Advisory

Timeline

Published: Dec 26, 2019
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-4420?

How severe is CVE-2012-4420?

CVE-2012-4420 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.51% probability of exploitation in the next 30 days.

How do I fix CVE-2012-4420?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-4420?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST