CVE-2012-4420: java-1.7.0-openjdk vulnerability

CVE-2012-4420: An information disclosure flaw was found in the way the Java Virtual Machine (JVM) implementation of Java S...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 20:35 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw affected OpenJDK 7 builds where newly allocated integer arrays could contain leftover nonzero data. A remote attacker could potentially read sensitive information exposed through that memory handling error. The bundle does not provide CVSS scoring or evidence of active exploitation. Exposure is most likely in legacy systems still running java-1.7.0-openjdk 1.7.0_04 to 1.7.0_10, especially where untrusted or remotely supplied Java code can execute. Modern supported Java runtimes are not identified as affected in the bundle. Treat this as a legacy runtime hygiene issue with confidentiality impact. Prioritize systems that still run OpenJDK 7 and accept untrusted Java execution. It is not KEV-listed in the provided sources, so urgency depends on actual exposure. Mitigation focus: Identify and retire affected OpenJDK 7 package versions.; Follow Red Hat/OpenJDK vendor guidance for fixed or supported packages.; Avoid running untrusted Java code on affected runtimes..

Prepared: Jun 6, 2026, 03:31 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 26, 2019, 20:46 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-4420CVE reference · x_refsource_MISC
https://access.redhat.com/security/cve/cve-2012-4420CVE reference · x_refsource_MISC
https://exchange.xforce.ibmcloud.com/vulnerabilities/78693CVE reference · x_refsource_MISC
https://www.openwall.com/lists/oss-security/2012/09/12/4CVE reference · x_refsource_MISC
https://bugs.java.com/bugdatabase/view_bug.do?bug_id=7196857CVE reference · x_refsource_MISC

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

java-1.7.0-openjdkjava-1.7.0-openjdk1.7.0_04 to 1.7.0_10Listed

Weakness

CWE details

No CWE listed

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