CVE-2016-0034

CRITICALNVD 8.89.0▲
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 8.8 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
9.0EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 69%CVSS: 8.8Exploit: cisa kev · ssvc active · kev ransomware · epss top5pct · epss highExposed services: Not assessed

A fix is available — apply it.

Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."

CVSS v3
8.8
EG Score
9.0CRITICALhigh confidence
EG Risk
81
EG Risk 81/100CISA 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
Severity90% × 45%
Exploitation100% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Attend at medium and Act at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low, sooner than that at medium and as soon as possible at high mission impact.
EPSS PROB
69%
EPSS %ILE
99th
KEV
⚠ Exploited

CISA SSVCTrack at low, Attend at medium and Act at high mission impact.

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

Exploitation active (CISA Vulnrichment) · Automatable no (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 13, 2016

Last Modified

August 14, 2026

Advisory Details (2)

Auto-updated May 2, 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-2016-0034
generic

Microsoft Security Bulletin MS16-006 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-006

Vendor Advisories for CVE-2016-0034(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 53× in last 7d / 238× 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 1,013 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2016-0034?
CVE-2016-0034 is a critical vulnerability published on January 13, 2016. Microsoft Silverlight 5 before 5.1.41212.0 mishandles negative offsets during decoding, which allows remote attackers to execute arbitrary code or cause a denial of service (object-header corruption) via a crafted web site, aka "Silverlight Runtime Remote Code Execution Vulnerability."
When was CVE-2016-0034 disclosed?
CVE-2016-0034 was first published on January 13, 2016, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-0034 actively exploited?
Yes. CISA added CVE-2016-0034 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 attention. A fix is available. Apply it.
What is the CVSS score of CVE-2016-0034?
CVE-2016-0034 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0 (CRITICAL).
Which products are affected by CVE-2016-0034?
CVE-2016-0034 affects Microsoft Silverlight.
How do I remediate CVE-2016-0034?
A fix for CVE-2016-0034 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2016-0034 are linked in the Vendor Advisories panel on this page.

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