CVE-2013-2423

LOWNVD 3.79.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 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 3.7 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 5 sources updated this weekExploited in the wild
3.7
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 85%CVSS: 3.7Exploit: NoneExposed: 0

A fix is available — apply it.

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented on claims from the original researcher that this vulnerability allows remote attackers to bypass permission checks by the MethodHandles method and modify arbitrary public final fields using reflection and type confusion, as demonstrated using integer and double fields to disable the security manager.

CVSS v3
3.7
EG Score
9.0(high)
EPSS
99.7%
KEV
⚠ Exploited

Published

April 17, 2013

Last Modified

April 22, 2026

References (33)

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuopenjdk-7-jre (7u21-2.3.9-0ubuntu0.12.10.1) @ quantal2026-07-07ubuntu
redhatjava-1.7.0-ibm-1:1.7.0.4.2-1jpp.1.el6_42013-05-14redhat
redhatjava-1.7.0-oracle-1:1.7.0.21-1jpp.1.el62013-04-18redhat
redhatjava-1.7.0-openjdk-1:1.7.0.19-2.3.9.1.el5_92013-04-17redhat
redhatjava-1.7.0-openjdk-1:1.7.0.19-2.3.9.1.el6_42013-04-17redhat

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

(5)

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 119× in last 7d / 510× 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 673 total refreshes for this CVE.

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

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-24976✓ verified
    First seen Apr 23, 2013

    Java Applet - Reflection Type Confusion Remote Code Execution (Metasploit)

    Open source ↗
  • Metasploitexploit/multi/browser/java_jre17_reflection_types✓ verified
    First seen Jan 10, 2013

    Java Applet Reflection Type Confusion Remote Code Execution

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(6)

What is CVE-2013-2423?
CVE-2013-2423 is a low vulnerability published on April 17, 2013. Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented…
When was CVE-2013-2423 disclosed?
CVE-2013-2423 was first published in the National Vulnerability Database on April 17, 2013, with the most recent update on April 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2013-2423 actively exploited?
Yes. CISA added CVE-2013-2423 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 patching attention.
What is the CVSS score of CVE-2013-2423?
CVE-2013-2423 has a CVSS v3 base score of 3.7 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2013-2423?
CVE-2013-2423 affects Oracle Java Runtime Environment (JRE). The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2013-2423?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-2423, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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