CVE-2013-0422

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-05-25), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 97%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed services: Not assessed

A fix is available — apply it.

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 v3
9.8
EG Score
9.8CRITICALhigh confidence
EG Risk
99
EG Risk 99/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
CISA SSVC: Attend at low mission impact; Act at medium or high.
Action: A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.
EPSS PROB
97%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCAttend at low mission impact; Act at medium or high.

A fix is available. Apply it sooner than your standard update timelines at low mission impact and as soon as possible at medium or high.

Exploitation active (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

January 10, 2013

Last Modified

April 21, 2026

Advisory Details (6)

Auto-updated Oct 8, 2026
⚠️ Active exploitation confirmed. Patch available.
generic🔴 Active Exploitation

Bugtraq: [SE-2012-01] 'Fix' for Issue 32 exploited by new Java 0-day code

http://seclists.org/bugtraq/2013/Jan/48
generic
http://rhn.redhat.com/errata/RHSA-2013-0165.html
generic
http://rhn.redhat.com/errata/RHSA-2013-0156.html
generic🔴 Active Exploitation

0 day 1.7u10 (CVE-2013-0422) spotted in the Wild - Disable Java Plugin NOW !

http://malware.dontneedcoffee.com/2013/01/0-day-17u10-spotted-in-while-disable.html
genericMentions a patch (unverified)

Zero-Day Java Exploit Debuts in Crimeware – Krebs on Security

http://krebsonsecurity.com/2013/01/zero-day-java-exploit-debuts-in-crimeware/
generic🔴 Active Exploitation

Immunity Products: Confirmed: Java only fixed one of the two bugs.

http://immunityproducts.blogspot.ca/2013/01/confirmed-java-only-fixed-one-of-two.html

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuopenjdk-7-jre (7u9-2.3.4-0ubuntu1.12.10.1) @ quantal2026-10-10ubuntu
redhatjava-1.7.0-ibm-1:1.7.0.4.0-1jpp.2.el6_42013-03-11redhat
redhatjava-1.7.0-openjdk-1:1.7.0.9-2.3.4.1.el6_32013-01-16redhat
redhatjava-1.7.0-oracle-1:1.7.0.11-1jpp.3.el6_32013-01-14redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 84× in last 7d / 375× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 1,658 total refreshes for this CVE.

  1. 2026-10-10 14:23 UTCVendor advisory
  2. 2026-10-10 14:23 UTCGHSA enrichment
  3. 2026-10-10 10:18 UTCVendor advisory
  4. 2026-10-10 10:18 UTCGHSA enrichment
  5. 2026-10-10 06:13 UTCVendor advisory
  6. 2026-10-10 06:13 UTCGHSA enrichment
  7. 2026-10-10 02:06 UTCVendor advisory
  8. 2026-10-10 02:06 UTCGHSA enrichment
  9. 2026-10-09 22:02 UTCVendor advisory
  10. 2026-10-09 22:01 UTCGHSA enrichment
  11. 2026-10-09 17:55 UTCVendor advisory
  12. 2026-10-09 17:55 UTCGHSA enrichment
  13. 2026-10-09 13:48 UTCVendor advisory
  14. 2026-10-09 13:48 UTCGHSA enrichment
  15. 2026-10-09 09:43 UTCVendor advisory
  16. 2026-10-09 09:42 UTCGHSA enrichment
  17. 2026-10-09 05:36 UTCVendor advisory
  18. 2026-10-09 05:36 UTCGHSA enrichment
  19. 2026-10-09 01:30 UTCVendor advisory
  20. 2026-10-09 01:30 UTCGHSA enrichment
  21. 2026-10-08 21:25 UTCVendor advisory
  22. 2026-10-08 21:25 UTCGHSA enrichment
  23. 2026-10-08 17:19 UTCVendor advisory
  24. 2026-10-08 17:19 UTCGHSA enrichment
  25. 2026-10-08 13:14 UTCVendor advisory
Show 75 more
  1. 2026-10-08 13:13 UTCGHSA enrichment
  2. 2026-10-08 09:03 UTCVendor advisory
  3. 2026-10-08 09:03 UTCGHSA enrichment
  4. 2026-10-08 04:58 UTCVendor advisory
  5. 2026-10-08 04:58 UTCGHSA enrichment
  6. 2026-10-08 00:53 UTCVendor advisory
  7. 2026-10-08 00:53 UTCGHSA enrichment
  8. 2026-10-07 20:48 UTCVendor advisory
  9. 2026-10-07 20:48 UTCGHSA enrichment
  10. 2026-10-07 16:42 UTCVendor advisory
  11. 2026-10-07 16:42 UTCGHSA enrichment
  12. 2026-10-07 12:34 UTCVendor advisory
  13. 2026-10-07 12:34 UTCGHSA enrichment
  14. 2026-10-07 08:28 UTCVendor advisory
  15. 2026-10-07 08:28 UTCGHSA enrichment
  16. 2026-10-07 04:23 UTCVendor advisory
  17. 2026-10-07 04:23 UTCGHSA enrichment
  18. 2026-10-07 00:18 UTCVendor advisory
  19. 2026-10-07 00:18 UTCGHSA enrichment
  20. 2026-10-06 20:12 UTCVendor advisory
  21. 2026-10-06 20:12 UTCGHSA enrichment
  22. 2026-10-06 16:07 UTCVendor advisory
  23. 2026-10-06 16:07 UTCGHSA enrichment
  24. 2026-10-06 12:02 UTCVendor advisory
  25. 2026-10-06 12:02 UTCGHSA enrichment
  26. 2026-10-06 07:57 UTCVendor advisory
  27. 2026-10-06 07:57 UTCGHSA enrichment
  28. 2026-10-06 03:52 UTCVendor advisory
  29. 2026-10-06 03:51 UTCGHSA enrichment
  30. 2026-10-05 23:44 UTCVendor advisory
  31. 2026-10-05 23:44 UTCGHSA enrichment
  32. 2026-10-05 19:38 UTCEG score recompute
  33. 2026-10-05 19:38 UTCVendor advisory
  34. 2026-10-05 19:38 UTCGHSA enrichment
  35. 2026-10-05 17:38 UTCEPSS rescore
  36. 2026-10-05 15:33 UTCVendor advisory
  37. 2026-10-05 15:33 UTCGHSA enrichment
  38. 2026-10-05 11:26 UTCVendor advisory
  39. 2026-10-05 11:26 UTCGHSA enrichment
  40. 2026-10-05 07:20 UTCVendor advisory
  41. 2026-10-05 07:20 UTCGHSA enrichment
  42. 2026-10-05 03:15 UTCVendor advisory
  43. 2026-10-05 03:15 UTCGHSA enrichment
  44. 2026-10-04 23:10 UTCVendor advisory
  45. 2026-10-04 23:10 UTCGHSA enrichment
  46. 2026-10-04 19:05 UTCVendor advisory
  47. 2026-10-04 19:04 UTCGHSA enrichment
  48. 2026-10-04 14:58 UTCVendor advisory
  49. 2026-10-04 14:58 UTCGHSA enrichment
  50. 2026-10-04 10:52 UTCVendor advisory
  51. 2026-10-04 10:52 UTCGHSA enrichment
  52. 2026-10-04 06:47 UTCVendor advisory
  53. 2026-10-04 06:47 UTCGHSA enrichment
  54. 2026-10-04 02:41 UTCVendor advisory
  55. 2026-10-04 02:41 UTCGHSA enrichment
  56. 2026-10-03 22:36 UTCVendor advisory
  57. 2026-10-03 22:36 UTCGHSA enrichment
  58. 2026-10-03 18:31 UTCVendor advisory
  59. 2026-10-03 18:31 UTCGHSA enrichment
  60. 2026-10-03 14:22 UTCEG score recompute
  61. 2026-10-03 14:22 UTCVendor advisory
  62. 2026-10-03 14:22 UTCGHSA enrichment
  63. 2026-10-03 10:16 UTCVendor advisory
  64. 2026-10-03 10:16 UTCGHSA enrichment
  65. 2026-10-03 06:11 UTCVendor advisory
  66. 2026-10-03 06:11 UTCGHSA enrichment
  67. 2026-10-03 02:05 UTCVendor advisory
  68. 2026-10-03 02:05 UTCGHSA enrichment
  69. 2026-10-02 22:00 UTCVendor advisory
  70. 2026-10-02 22:00 UTCGHSA enrichment
  71. 2026-10-02 17:54 UTCEG score recompute
  72. 2026-10-02 17:54 UTCVendor advisory
  73. 2026-10-02 17:54 UTCGHSA enrichment
  74. 2026-10-02 13:49 UTCVendor advisory
  75. 2026-10-02 13:49 UTCGHSA enrichment

Publicly available exploits

(2 references)

Working exploit code is in the public domain (1 Metasploit module) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-24045✓ verified
    First seen Jan 11, 2013

    Java Applet JMX - Remote Code Execution (Metasploit) (1)

    Open source ↗
  • Metasploitexploit/multi/browser/java_jre17_jmxbean✓ verified
    First seen Jan 10, 2013

    Java Applet JMX Remote Code Execution

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2013-0422?
CVE-2013-0422 is a critical vulnerability published on January 10, 2013. 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…
When was CVE-2013-0422 disclosed?
CVE-2013-0422 was first published on January 10, 2013, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-0422 actively exploited?
Yes. CISA added CVE-2013-0422 to the Known Exploited Vulnerabilities catalog on May 25, 2022, affecting Oracle Java Runtime Environment (JRE). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate attention. A fix is available. Apply it.
What is the CVSS score of CVE-2013-0422?
CVE-2013-0422 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2013-0422?
CVE-2013-0422 affects Oracle Java Runtime Environment (JRE).
How do I remediate CVE-2013-0422?
A fix for CVE-2013-0422 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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