Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2012-0507

Java SE Denial of Service

Oracle / Java SE

Watch CVE-2012-0507 Browse KEV feed
Severity
CVSS 9.8 · Critical
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
98.2%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2012-0507 is an unauthenticated vulnerability affecting Oracle Java SE. Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 2 and earlier, 6 Update 30 and earlier,...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Oracle / Java SE.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Java SE Denial of Service

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.

View vendor advisory (opens in new tab)
Published
07 Jun 2012
Exploitation Reported
03 Mar 2022
Attack vector
Remote
Complexity
Low
Privileges
None
User interaction
None

Tags

metasploit java cisa ransomware malware

CVE References

  • CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2012-0507
  • HPSBUX02784 marc.info · Vendor Advisory http://marc.info/?l=bugtraq&m=133847939902305&w=2
  • HPSBMU02799 marc.info · Vendor Advisory http://marc.info/?l=bugtraq&m=134254866602253&w=2
  • SSRT100805 marc.info · Vendor Advisory http://marc.info/?l=bugtraq&m=133365109612558&w=2
  • SUSE-SU-2012:0602 lists.opensuse.org · Vendor Advisory http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00009...
  • RHSA-2013:1455 rhn.redhat.com · Vendor Advisory http://rhn.redhat.com/errata/RHSA-2013-1455.html
  • SUSE-SU-2012:0603 lists.opensuse.org · Vendor Advisory http://lists.opensuse.org/opensuse-security-announce/2012-05/msg00010...
  • HPSBUX02757 marc.info · Vendor Advisory http://marc.info/?l=bugtraq&m=133364885411663&w=2
  • DSA-2420 debian.org · Vendor Advisory http://www.debian.org/security/2012/dsa-2420
  • RHSA-2012:0508 rhn.redhat.com · Vendor Advisory http://rhn.redhat.com/errata/RHSA-2012-0508.html
  • SSRT100867 marc.info · Vendor Advisory http://marc.info/?l=bugtraq&m=134254957702612&w=2
  • RHSA-2012:0514 rhn.redhat.com · Vendor Advisory http://rhn.redhat.com/errata/RHSA-2012-0514.html
  • 48692 secunia.com · Third-Party Advisory http://secunia.com/advisories/48692
  • 48589 secunia.com · Third-Party Advisory http://secunia.com/advisories/48589
  • 48950 secunia.com · Third-Party Advisory http://secunia.com/advisories/48950
  • 48948 secunia.com · Third-Party Advisory http://secunia.com/advisories/48948
  • 48915 secunia.com · Third-Party Advisory http://secunia.com/advisories/48915
  • 52161 securityfocus.com · VDB Entry http://www.securityfocus.com/bid/52161
  • oracle.com/technetwork/topics/security/javacpufeb2012-3... oracle.com · CVE Record http://www.oracle.com/technetwork/topics/security/javacpufeb2012-3663...
  • krebsonsecurity.com/2012/03/new-java-attack-rolled-into-exploit-... krebsonsecurity.com · CVE Record http://krebsonsecurity.com/2012/03/new-java-attack-rolled-into-exploi...
  • weblog.ikvm.net/PermaLink.aspx weblog.ikvm.net · CVE Record http://weblog.ikvm.net/PermaLink.aspx?guid=cd48169a-9405-4f63-9087-79...
  • blogs.technet.com/b/mmpc/archive/2012/03/20/an-interesting-cas... blogs.technet.com · CVE Record http://blogs.technet.com/b/mmpc/archive/2012/03/20/an-interesting-cas...
  • bugzilla.redhat.com/show_bug.cgi bugzilla.redhat.com · CVE Record https://bugzilla.redhat.com/show_bug.cgi?id=788994

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CISA

Recorded 03 Mar 2022

A trusted third party reported exploitation.

Used in malware

CISA

Recorded 03 Mar 2022

Malware families have been linked to exploitation of this CVE.

Proof of concept available

Recorded 28 Apr 2025

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
CISA First 2022-03-03 00:00 UTC
CVE 2026-08-14 04:30 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/java_atomicreferencearray.rb 28 Apr 2025

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

9.8 Critical

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

98.2%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Access of Resource Using Incompatible Type ('Type Confusion') CWE-843

All CVSS Scores

CVSS v3.1 9.8 Critical

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

CVSS v2.0 10.0 High

AV:N/AC:L/Au:N/C:C/I:C/A:C

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

java_atomicreferencearray

metasploit · Created Unknown

Metasploit module for CVE-2012-0507

Timeline

From disclosure to observed exploitation

  1. 04:30 UTC

    KEV confirmed by CVE

    Exploitation attested by an external source

  2. 15:02 UTC

    Metasploit module available

    Exploit module available

  3. 15:02 UTC

    Public PoC available

    Public proof-of-concept code published

  4. 00:00 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  5. 00:00 UTC

    First public exploitation report

    Exploit observed in malware

  6. 22:00 UTC

    CVE published

    Vulnerability disclosed publicly

  7. 00:00 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

Start 14-day Pro trial Read API docs
  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2012-0507

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2012-0507",
  "confidence": "Confirmed",
  "cvss_score": 9.8,
  "cvss_estimated": false,
  "epss_score": 0.98189,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}