CVE-2013-3896

MEDIUMNVD 5.59.0▲
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 5.5 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
5.5
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 70%CVSS: 5.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain sensitive information via a crafted Silverlight application, aka "Silverlight Vulnerability."

CVSS v3
5.5
EG Score
9.0(high)
EPSS
99.3%
KEV
⚠ Exploited

Published

October 9, 2013

Last Modified

April 22, 2026

Advisory Details (2)

Auto-updated May 20, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2013-3896
generic

Microsoft Security Bulletin MS13-087 - Important | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-087

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 89× in last 7d / 395× 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 536 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 16:50 UTCEG score recompute
  4. 2026-07-07 16:50 UTCGHSA enrichment
  5. 2026-07-07 12:53 UTCEG score recompute
  6. 2026-07-07 12:53 UTCGHSA enrichment
  7. 2026-07-07 08:55 UTCEG score recompute
  8. 2026-07-07 08:55 UTCGHSA enrichment
  9. 2026-07-07 04:51 UTCEG score recompute
  10. 2026-07-07 04:51 UTCGHSA enrichment
  11. 2026-07-07 00:54 UTCEG score recompute
  12. 2026-07-07 00:53 UTCGHSA enrichment
  13. 2026-07-06 20:55 UTCEG score recompute
  14. 2026-07-06 20:55 UTCGHSA enrichment
  15. 2026-07-06 16:54 UTCEG score recompute
  16. 2026-07-06 16:54 UTCGHSA enrichment
  17. 2026-07-06 12:57 UTCEG score recompute
  18. 2026-07-06 12:57 UTCGHSA enrichment
  19. 2026-07-06 08:56 UTCEG score recompute
  20. 2026-07-06 08:55 UTCGHSA enrichment
  21. 2026-07-06 04:55 UTCEG score recompute
  22. 2026-07-06 04:55 UTCGHSA enrichment
  23. 2026-07-06 00:58 UTCEG score recompute
  24. 2026-07-06 00:58 UTCGHSA enrichment
  25. 2026-07-05 20:59 UTCEG score recompute
Show 75 more
  1. 2026-07-05 20:59 UTCGHSA enrichment
  2. 2026-07-05 17:02 UTCEG score recompute
  3. 2026-07-05 17:02 UTCGHSA enrichment
  4. 2026-07-05 13:04 UTCEG score recompute
  5. 2026-07-05 13:04 UTCGHSA enrichment
  6. 2026-07-05 09:07 UTCEG score recompute
  7. 2026-07-05 09:07 UTCGHSA enrichment
  8. 2026-07-05 05:08 UTCEG score recompute
  9. 2026-07-05 05:08 UTCGHSA enrichment
  10. 2026-07-05 01:10 UTCEG score recompute
  11. 2026-07-05 01:10 UTCGHSA enrichment
  12. 2026-07-04 21:08 UTCEG score recompute
  13. 2026-07-04 21:08 UTCGHSA enrichment
  14. 2026-07-04 17:11 UTCEG score recompute
  15. 2026-07-04 17:10 UTCGHSA enrichment
  16. 2026-07-04 13:11 UTCEG score recompute
  17. 2026-07-04 13:11 UTCGHSA enrichment
  18. 2026-07-04 09:14 UTCEG score recompute
  19. 2026-07-04 09:14 UTCGHSA enrichment
  20. 2026-07-04 06:27 UTCEPSS rescore
  21. 2026-07-04 05:15 UTCEG score recompute
  22. 2026-07-04 05:15 UTCGHSA enrichment
  23. 2026-07-04 01:17 UTCEG score recompute
  24. 2026-07-04 01:17 UTCGHSA enrichment
  25. 2026-07-03 21:19 UTCEG score recompute
  26. 2026-07-03 21:19 UTCGHSA enrichment
  27. 2026-07-03 17:22 UTCEG score recompute
  28. 2026-07-03 17:22 UTCGHSA enrichment
  29. 2026-07-03 13:24 UTCEG score recompute
  30. 2026-07-03 13:24 UTCGHSA enrichment
  31. 2026-07-03 09:25 UTCEG score recompute
  32. 2026-07-03 09:25 UTCGHSA enrichment
  33. 2026-07-03 05:28 UTCEG score recompute
  34. 2026-07-03 05:28 UTCGHSA enrichment
  35. 2026-07-03 01:27 UTCEG score recompute
  36. 2026-07-03 01:27 UTCGHSA enrichment
  37. 2026-07-02 21:29 UTCEG score recompute
  38. 2026-07-02 21:28 UTCGHSA enrichment
  39. 2026-07-02 17:31 UTCEG score recompute
  40. 2026-07-02 17:31 UTCGHSA enrichment
  41. 2026-07-02 13:33 UTCEG score recompute
  42. 2026-07-02 13:33 UTCGHSA enrichment
  43. 2026-07-02 09:36 UTCEG score recompute
  44. 2026-07-02 09:36 UTCGHSA enrichment
  45. 2026-07-02 05:39 UTCEG score recompute
  46. 2026-07-02 05:39 UTCGHSA enrichment
  47. 2026-07-02 01:41 UTCEG score recompute
  48. 2026-07-02 01:41 UTCGHSA enrichment
  49. 2026-07-01 21:44 UTCEG score recompute
  50. 2026-07-01 21:44 UTCGHSA enrichment
  51. 2026-07-01 19:16 UTCCISA KEV update
  52. 2026-07-01 17:47 UTCEG score recompute
  53. 2026-07-01 17:47 UTCGHSA enrichment
  54. 2026-07-01 15:02 UTCEPSS rescore
  55. 2026-07-01 13:49 UTCEG score recompute
  56. 2026-07-01 13:49 UTCGHSA enrichment
  57. 2026-07-01 09:51 UTCEG score recompute
  58. 2026-07-01 09:51 UTCGHSA enrichment
  59. 2026-07-01 05:54 UTCEG score recompute
  60. 2026-07-01 05:53 UTCGHSA enrichment
  61. 2026-07-01 01:55 UTCEG score recompute
  62. 2026-07-01 01:55 UTCGHSA enrichment
  63. 2026-06-30 21:57 UTCEG score recompute
  64. 2026-06-30 21:57 UTCGHSA enrichment
  65. 2026-06-30 17:59 UTCEG score recompute
  66. 2026-06-30 17:59 UTCGHSA enrichment
  67. 2026-06-30 14:02 UTCEG score recompute
  68. 2026-06-30 14:01 UTCGHSA enrichment
  69. 2026-06-30 10:02 UTCEG score recompute
  70. 2026-06-30 10:02 UTCGHSA enrichment
  71. 2026-06-30 06:03 UTCEG score recompute
  72. 2026-06-30 06:03 UTCGHSA enrichment
  73. 2026-06-30 02:05 UTCEG score recompute
  74. 2026-06-30 02:05 UTCGHSA enrichment
  75. 2026-06-29 22:08 UTCEG score recompute

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-41702✓ verified
    First seen Mar 12, 2013

    Microsoft Silverlight - ScriptObject Unsafe Memory Access (MS13-022/MS13-087) (Metasploit)

    Open source ↗
  • Metasploitexploit/windows/browser/ms13_022_silverlight_script_object✓ verified
    First seen Mar 12, 2013

    MS13-022 Microsoft Silverlight ScriptObject Unsafe Memory Access

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2013-3896?
CVE-2013-3896 is a medium vulnerability published on October 9, 2013. Microsoft Silverlight 5 before 5.1.20913.0 does not properly validate pointers during access to Silverlight elements, which allows remote attackers to obtain sensitive information via a crafted Silverlight application, aka "Silverlight Vulnerability."
When was CVE-2013-3896 disclosed?
CVE-2013-3896 was first published in the National Vulnerability Database on October 9, 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-2013-3896 actively exploited?
Yes. CISA added CVE-2013-3896 to the Known Exploited Vulnerabilities catalog on May 25, 2022, affecting Microsoft Silverlight. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2013-3896?
CVE-2013-3896 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2013-3896?
CVE-2013-3896 affects Microsoft Silverlight. 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-2013-3896?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2013-3896, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2013-3896

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