CVE-2016-4523

HIGHNVD 7.59.0▲
EchelonGraph scoreHIGH confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-04-15), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.5 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
7.5
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 31%CVSS: 7.5Exploit: NoneExposed: 0

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

The WAP interface in Trihedral VTScada (formerly VTS) 8.x through 11.x before 11.2.02 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via unspecified vectors.

CVSS v3
7.5
EG Score
9.0(high)
EPSS
98.1%
KEV
⚠ Exploited

Published

June 9, 2016

Last Modified

April 22, 2026

Advisory Details (3)

Auto-updated May 19, 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-2016-4523
generic

ZDI-16-405 | Zero Day Initiative

http://www.zerodayinitiative.com/advisories/ZDI-16-405
generic
http://www.securityfocus.com/bid/91077

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 106× in last 7d / 432× 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 699 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2016-4523?
CVE-2016-4523 is a high vulnerability published on June 9, 2016. The WAP interface in Trihedral VTScada (formerly VTS) 8.x through 11.x before 11.2.02 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via unspecified vectors.
When was CVE-2016-4523 disclosed?
CVE-2016-4523 was first published in the National Vulnerability Database on June 9, 2016, 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-2016-4523 actively exploited?
Yes. CISA added CVE-2016-4523 to the Known Exploited Vulnerabilities catalog on April 15, 2022, affecting Trihedral VTScada (formerly VTS). KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2016-4523?
CVE-2016-4523 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2016-4523?
CVE-2016-4523 affects Trihedral VTScada (formerly VTS). 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-2016-4523?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-4523, 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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