CVE-2013-0422Multiple 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…
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It affects oracle jdk and 3 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since May 25, 2022; federal agencies had to remediate by Jun 15, 2022, and it is known to be used in ransomware. Treat that date as your deadline.
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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.
- CVSS
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-284
- Known exploited
- Added to CISA KEV May 25, 2022; federal remediation due Jun 15, 2022; known ransomware useApply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 97.02% (percentile 100)
- Assigned by
- oracle
- NVD analysis
- Analyzed
- Record last updated
- Oct 22, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
oracle jdk oracle:jdk | 1.7.0; 1.7.0; 1.7.0; 1.7.0; 1.7.0; 1.7.0; 1.7.0; 1.7.0; and 2 more ranges | NVD |
oracle jre oracle:jre | 1.7.0; 1.7.0; 1.7.0; 1.7.0; 1.7.0; 1.7.0; 1.7.0; 1.7.0; and 2 more ranges | NVD |
canonical ubuntu_linux canonical:ubuntu_linux | 12.10 | NVD |
opensuse opensuse opensuse:opensuse | 12.2 | NVD |
References
- http://rhn.redhat.com/errata/RHSA-2013-0156.htmlvendor-advisory, x-refsource-redhat, third-party-advisory
- http://malware.dontneedcoffee.com/2013/01/0-day-17u10-spotted-in-while-disable.htmlx-refsource-misc, third-party-advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:095vendor-advisory, x-refsource-mandriva, not-applicable
- http://blog.fuseyism.com/index.php/2013/01/15/security-icedtea-2-1-4-2-2-4-2-3-4-released/x-refsource-misc, broken-link
- http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00025.htmlvendor-advisory, x-refsource-suse, mailing-list, third-party-advisory
- http://rhn.redhat.com/errata/RHSA-2013-0165.htmlvendor-advisory, x-refsource-redhat, third-party-advisory
- http://www.kb.cert.org/vuls/id/625617third-party-advisory, x-refsource-cert-vn, us-government-resource
- http://www.us-cert.gov/cas/techalerts/TA13-010A.htmlthird-party-advisory, x-refsource-cert, us-government-resource
- https://partners.immunityinc.com/idocs/Java%20MBeanInstantiator.findClass%200day%20Analysis.pdfx-refsource-misc, broken-link
- http://blog.fireeye.com/research/2013/01/happy-new-year-from-new-java-zero-day.htmlx-refsource-misc, not-applicable
- https://www-304.ibm.com/connections/blogs/PSIRT/entry/oracle_java_7_security_manager_bypass_vulnerability_cve_2013_04224?lang=en_usx-refsource-misc, not-applicable
- http://www.ubuntu.com/usn/USN-1693-1vendor-advisory, x-refsource-ubuntu, third-party-advisory
- https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0018x-refsource-confirm, third-party-advisory
- http://immunityproducts.blogspot.ca/2013/01/confirmed-java-only-fixed-one-of-two.htmlx-refsource-misc, third-party-advisory
- https://threatpost.com/en_us/blogs/nasty-new-java-zero-day-found-exploit-kits-already-have-it-011013x-refsource-misc, not-applicable
- http://seclists.org/bugtraq/2013/Jan/48mailing-list, x-refsource-bugtraq, third-party-advisory
- http://www.oracle.com/technetwork/topics/security/alert-cve-2013-0422-1896849.htmlx-refsource-confirm, vendor-advisory
- http://krebsonsecurity.com/2013/01/zero-day-java-exploit-debuts-in-crimeware/x-refsource-misc, third-party-advisory
- http://labs.alienvault.com/labs/index.php/2013/new-year-new-java-zeroday/x-refsource-misc, broken-link, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-0422us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.