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Vulnerabilities

Vulnerability · CVE-2013-0422

Oracle JRE Remote Code Execution Vulnerability

Published Jan 10, 2013 · catalog updated Jun 16, 2026 · Oracle Java Runtime Environment (JRE)

Patch now

CVE-2013-0422 is in the CISA known-exploited catalog, due Jun 15, 2022. Confirm Oracle Java Runtime Environment (JRE) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
97.02%
Remediation
Remediation guidance
Affected products
cpe canonical/ubuntu linux · cpe oracle/jdk · vendor Oracle Java Runtime Environment (JRE) · vendor n/a n/a

Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using the public getMBeanInstantiator method in the JmxMBeanServer class to obtain a reference to a private MBeanInstantiator object, then retrieving arbitrary Class references using the findClass method, and (2) using the Reflection API with recursion in a way that bypasses a security check by the java.lang.invoke.MethodHandles.Lookup.checkSecurityManager method due to the inability of the sun.reflect.Reflection.getCallerClass method to skip frames related to the new reflection API, as exploited in the wild in January 2013, as demonstrated by Blackhole and Nuclear Pack, and a different vulnerability than CVE-2012-4681 and CVE-2012-3174. NOTE: some parties have mapped the recursive Reflection API issue to CVE-2012-3174, but CVE-2012-3174 is for a different vulnerability whose details are not public as of 20130114. CVE-2013-0422 covers both the JMX/MBean and Reflection API issues. NOTE: it was originally reported that Java 6 was also vulnerable, but the reporter has retracted this claim, stating that Java 6 is not exploitable because the relevant code is called in a way that does not bypass security checks. NOTE: as of 20130114, a reliable third party has claimed that the findClass/MBeanInstantiator vector was not fixed in Oracle Java 7 Update 11. If there is still a vulnerable condition, then a separate CVE identifier might be created for the unfixed issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe canonical/ubuntu linux12.10
  • cpe oracle/jdk1.7.0
  • vendor Oracle Java Runtime Environment (JRE)version unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2013-0422

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2013-0422 is in the CISA known-exploited catalog, due Jun 15, 2022. Confirm Oracle Java Runtime Environment (JRE) against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with canonical/ubuntu linux 12.10. Apply updates per vendor instructions.

What should an analyst verify?

CWE-264; CWE-284: Improper Access Control. EPSS 97.02%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 10, 2013 · Catalog

    Detected

    Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using the public getMBeanInstantiator method in the JmxMBeanServer class to obtain a reference to a private MBeanInstantiator object, then retrieving arbitrary Class references using the findClass method, and (2) using the Reflection API with recursion in a way that bypasses a securit

  2. May 25, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jun 15, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using the public getMBeanInstantiator method in the JmxMBeanServer class to obtain a reference to a private MBeanInstantiator object, then retrieving arbitrary Class references using the findClass method, and (2) using the Reflection API with recursion in a way that bypasses a securit

Sources

  • CISA KEVConfirmed exploitationCVE-2013-0422

    A vulnerability in the way Java restricts the permissions of Java applets could allow an attacker to execute commands on a vulnerable system.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2013-0422

    Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using the public getMBeanInstantiator method in the JmxMBeanServer class to obtain a reference to a private MBeanInstantiator object, then retrieving arbitrary Class

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2013-0422

    30-day exploitation probability 97.0%

    first.org
  • Exploit DatabasePublic exploit reference24045

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_multi/browser/java_jre17_jmxbean

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2013-0422

    Multiple vulnerabilities in Oracle Java 7 before Update 11 allow remote attackers to execute arbitrary code by (1) using the public getMBeanInstantiator method in the JmxMBeanServer class to obtain a reference to a private MBeanInstantiator object, then retrieving arbitrary Class

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2013-0422

    A vulnerability in the way Java restricts the permissions of Java applets could allow an attacker to execute commands on a vulnerable system.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.