CVE-2020-37216

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-04-03. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

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

Hirschmann HiOS devices versions prior to 08.1.00 and 07.1.01 contain a denial of service vulnerability in the EtherNet/IP stack where improper handling of packet length fields allows remote attackers to crash or hang the device. Attackers can send specially crafted UDP EtherNet/IP packets with a length value larger than the actual packet size to render the device inoperable.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
58%
KEV
Not listed

Published

April 3, 2026

Last Modified

July 24, 2026

Advisory Details (2)

Auto-updated Jul 24, 2026
No patch confirmed yet.
generic

Hirschmann HiOS EtherNet/IP Stack Denial of Service | Advisories | VulnCheck

https://www.vulncheck.com/advisories/hirschmann-hios-ethernet-ip-stack-denial-of-service
generic
https://assets.belden.com/m/3d3e2cbfa4860258/original/Belden-Security-Bulletin-BSECV-2019-14.pdf

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 25× 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 212 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-37216?
CVE-2020-37216 is a high vulnerability published on April 3, 2026. Hirschmann HiOS devices versions prior to 08.1.00 and 07.1.01 contain a denial of service vulnerability in the EtherNet/IP stack where improper handling of packet length fields allows remote attackers to crash or hang the device. Attackers can send specially crafted UDP EtherNet/IP packets with a…
When was CVE-2020-37216 disclosed?
CVE-2020-37216 was first published in the National Vulnerability Database on April 3, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-37216 actively exploited?
CVE-2020-37216 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 41.7% of all scored CVEs.
What is the CVSS score of CVE-2020-37216?
CVE-2020-37216 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2020-37216?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-37216, 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-2020-37216

Explore →

Is Your Infrastructure Affected by CVE-2020-37216?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs