CVE-2021-38489

HIGHPre-NVD 8.28.2—
EchelonGraph scoreHIGH confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-09-03. a secondary CVSS source baseline 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.2Exploit: None knownExposed: 0

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

HDD password plaintext is stored in a UEFI variable.

CVSS v3
8.2
EG Score
8.2(high)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity82% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 3, 2026
No patch confirmed yet.
generic

SA-2022025 - Insyde Software

https://www.insyde.com/security-pledge/sa-2022025/

Vendor Advisories for CVE-2021-38489(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 28× in last 7d / 66× 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.

  1. 2026-09-19 01:03 UTCEG score recompute
  2. 2026-09-19 01:03 UTCGHSA enrichment
  3. 2026-09-18 19:23 UTCEPSS rescore
  4. 2026-09-18 12:30 UTCGHSA enrichment
  5. 2026-09-17 23:57 UTCEG score recompute
  6. 2026-09-17 23:57 UTCGHSA enrichment
  7. 2026-09-17 19:23 UTCEPSS rescore
  8. 2026-09-17 19:23 UTCEPSS rescore
  9. 2026-09-17 10:08 UTCGHSA enrichment
  10. 2026-09-16 21:36 UTCEG score recompute
  11. 2026-09-16 21:36 UTCGHSA enrichment
  12. 2026-09-16 14:05 UTCEPSS rescore
  13. 2026-09-16 14:05 UTCEPSS rescore
  14. 2026-09-16 09:03 UTCEG score recompute
  15. 2026-09-16 09:03 UTCGHSA enrichment
  16. 2026-09-15 19:28 UTCGHSA enrichment
  17. 2026-09-15 06:56 UTCEG score recompute
  18. 2026-09-15 06:56 UTCGHSA enrichment
  19. 2026-09-15 03:06 UTCEPSS rescore
  20. 2026-09-14 18:24 UTCGHSA enrichment
  21. 2026-09-14 05:52 UTCGHSA enrichment
  22. 2026-09-13 17:20 UTCEG score recompute
  23. 2026-09-13 17:20 UTCGHSA enrichment
  24. 2026-09-13 16:43 UTCEPSS rescore
  25. 2026-09-13 04:48 UTCGHSA enrichment
Show 41 more
  1. 2026-09-12 16:15 UTCEG score recompute
  2. 2026-09-12 16:15 UTCGHSA enrichment
  3. 2026-09-12 14:57 UTCEPSS rescore
  4. 2026-09-12 03:42 UTCGHSA enrichment
  5. 2026-09-11 15:09 UTCEG score recompute
  6. 2026-09-11 15:09 UTCGHSA enrichment
  7. 2026-09-11 14:49 UTCEPSS rescore
  8. 2026-09-11 09:33 UTCEPSS rescore
  9. 2026-09-11 02:34 UTCGHSA enrichment
  10. 2026-09-10 14:01 UTCEG score recompute
  11. 2026-09-10 14:01 UTCGHSA enrichment
  12. 2026-09-10 01:29 UTCGHSA enrichment
  13. 2026-09-09 12:56 UTCGHSA enrichment
  14. 2026-09-09 00:24 UTCEG score recompute
  15. 2026-09-09 00:23 UTCGHSA enrichment
  16. 2026-09-08 21:56 UTCEPSS rescore
  17. 2026-09-08 11:19 UTCGHSA enrichment
  18. 2026-09-07 22:46 UTCEG score recompute
  19. 2026-09-07 22:46 UTCGHSA enrichment
  20. 2026-09-07 15:58 UTCEPSS rescore
  21. 2026-09-07 10:14 UTCGHSA enrichment
  22. 2026-09-06 21:42 UTCEG score recompute
  23. 2026-09-06 21:42 UTCGHSA enrichment
  24. 2026-09-06 13:45 UTCEPSS rescore
  25. 2026-09-06 13:45 UTCEPSS rescore
  26. 2026-09-06 09:08 UTCGHSA enrichment
  27. 2026-09-05 20:31 UTCEG score recompute
  28. 2026-09-05 20:31 UTCGHSA enrichment
  29. 2026-09-05 15:25 UTCEPSS rescore
  30. 2026-09-05 07:59 UTCGHSA enrichment
  31. 2026-09-04 19:26 UTCEG score recompute
  32. 2026-09-04 19:26 UTCGHSA enrichment
  33. 2026-09-04 13:57 UTCEPSS rescore
  34. 2026-09-04 06:54 UTCEG score recompute
  35. 2026-09-04 06:53 UTCGHSA enrichment
  36. 2026-09-04 05:03 UTCEPSS rescore
  37. 2026-09-03 18:19 UTCEG score recompute
  38. 2026-09-03 18:18 UTCGHSA enrichment
  39. 2026-09-03 13:05 UTCEG score recompute
  40. 2026-09-03 03:26 UTCEG score recompute
  41. 2026-09-03 03:24 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2021-38489?
CVE-2021-38489 is a high vulnerability published on September 3, 2026. HDD password plaintext is stored in a UEFI variable.
When was CVE-2021-38489 disclosed?
CVE-2021-38489 was first published in the National Vulnerability Database on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-38489 actively exploited?
CVE-2021-38489 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.8% of all scored CVEs.
What is the CVSS score of CVE-2021-38489?
CVE-2021-38489 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2021-38489?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-38489, 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-2021-38489

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