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) @ quantal2026-07-22ubuntu
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 86× in last 7d / 354× 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 649 total refreshes for this CVE.

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

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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