CVE-2026-3821

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-22. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

Supermicro (SMC) SMASH services contain an Arbitrary code execution issue in X14DBG-DAP and X14DBI. An authorized attacker can exploit SMASH’s input capability to compromise data integrity or launch a Denial-of-Service (DoS) attack against the BMC.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

July 22, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jul 22, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

Vulnerabilities in Supermicro BMC firmware, July 2026 | Supermicro

https://www.supermicro.com/en/support/security_BMC_IPMI_Jul_2026

Vendor Advisories for CVE-2026-3821(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 20× in last 7d / 90× 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 197 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-3821?
CVE-2026-3821 is a high vulnerability published on July 22, 2026. Supermicro (SMC) SMASH services contain an Arbitrary code execution issue in X14DBG-DAP and X14DBI. An authorized attacker can exploit SMASH’s input capability to compromise data integrity or launch a Denial-of-Service (DoS) attack against the BMC.
When was CVE-2026-3821 disclosed?
CVE-2026-3821 was first published in the National Vulnerability Database on July 22, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-3821 actively exploited?
CVE-2026-3821 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 51.3% of all scored CVEs.
What is the CVSS score of CVE-2026-3821?
CVE-2026-3821 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-3821?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-3821, 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

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