---
id: "CVE-2012-0507"
kind: "vulnerability"
aliases: ["CVE-2012-0507"]
title: "Oracle Java SE: Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability"
severity: "critical"
cvss: 10.0
epss: 0.98189
exploited: true
status: "open"
category: "runtime"
products: [{"name": "Oracle Java SE", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["browsers", "desktop", "exploited", "java", "oracle-jre", "ransomware", "runtime"]
not_affected_if: ["headless-server-without-jre", "java-not-installed"]
published_at: "2012-06-07T22:55:17+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2012-0507", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2012-0507", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2012-0507", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Oracle Java SE: Oracle Java SE Runtime Environment (JRE) Arbitrary Code Execution Vulnerability

Oracle's Java Runtime Environment has an incorrect type flaw in its Concurrency component that lets a remote attacker run arbitrary code. CISA lists it as actively exploited and it is tagged ransomware-related in the catalog.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Oracle Java SE affected ? fixed ?

## How to check

Run 'java -version' on each host and check the installed JRE/JDK build against Oracle's update list; unknown for a specific vulnerable build range.

## Fix

Update the Oracle Java SE runtime to a current, vendor-supported release per Oracle's instructions (CISA required action: apply updates per vendor instructions).

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2012-0507
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2012-0507
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2012-0507

## From the sources

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 2 and earlier, 6 Update 30 and earlier, and 5.0 Update 33 and earlier allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors related to Concurrency.  NOTE: the previous information was obtained from the February 2012 Oracle CPU. Oracle has not commented on claims from a downstream vendor and third party researchers that this issue occurs because the AtomicReferenceArray class implementation does not ensure that the array is of the Object[] type, which allows attackers to cause a denial of service (JVM crash) or bypass Java sandbox restrictions.  NOTE: this issue was originally mapped to CVE-2011-3571, but that identifier was already assigned to a different issue.

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