CVE-2026-20901

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-08-11. NVD baseline CVSS 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

Improper input validation for some Intel(R) Xeon(R) processors within firmware may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable data alteration. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (high) and availability (none) impacts.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 28, 2026

Advisory Details (1)

Auto-updated Aug 12, 2026
No patch confirmed yet.
generic

INTEL-SA-01442

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01442.html

Vendor Advisories for CVE-2026-20901(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
intel-microcode0.20080131-1 ... 3.20260227.1 (210 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
intel-microcode0.20080131-1 ... 3.20260227.1 (210 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
intel-microcode0.20080131-1 ... 3.20260227.1 (210 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 75× 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 112 total refreshes for this CVE.

  1. 2026-09-18 22:28 UTCEG score recompute
  2. 2026-09-18 22:28 UTCGHSA enrichment
  3. 2026-09-18 19:27 UTCEPSS rescore
  4. 2026-09-18 00:36 UTCEG score recompute
  5. 2026-09-18 00:36 UTCGHSA enrichment
  6. 2026-09-17 00:27 UTCEG score recompute
  7. 2026-09-17 00:27 UTCGHSA enrichment
  8. 2026-09-16 14:07 UTCEPSS rescore
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 22:14 UTCEG score recompute
  11. 2026-09-15 22:14 UTCGHSA enrichment
  12. 2026-09-14 22:37 UTCGHSA enrichment
  13. 2026-09-13 19:41 UTCEG score recompute
  14. 2026-09-13 19:41 UTCGHSA enrichment
  15. 2026-09-13 16:47 UTCEPSS rescore
  16. 2026-09-12 21:49 UTCGHSA enrichment
  17. 2026-09-11 23:57 UTCEG score recompute
  18. 2026-09-11 23:57 UTCGHSA enrichment
  19. 2026-09-11 14:52 UTCEPSS rescore
  20. 2026-09-11 01:19 UTCEG score recompute
  21. 2026-09-11 01:19 UTCGHSA enrichment
  22. 2026-09-10 09:34 UTCEPSS rescore
  23. 2026-09-10 03:27 UTCGHSA enrichment
  24. 2026-09-09 05:35 UTCEG score recompute
  25. 2026-09-09 05:35 UTCGHSA enrichment
Show 75 more
  1. 2026-09-08 22:00 UTCEPSS rescore
  2. 2026-09-07 18:44 UTCEG score recompute
  3. 2026-09-07 18:44 UTCGHSA enrichment
  4. 2026-09-07 16:01 UTCEPSS rescore
  5. 2026-09-06 20:52 UTCEG score recompute
  6. 2026-09-06 20:52 UTCGHSA enrichment
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-06 13:47 UTCEPSS rescore
  9. 2026-09-05 22:59 UTCEG score recompute
  10. 2026-09-05 22:59 UTCGHSA enrichment
  11. 2026-09-05 01:07 UTCEG score recompute
  12. 2026-09-05 01:07 UTCGHSA enrichment
  13. 2026-09-04 05:06 UTCEPSS rescore
  14. 2026-09-04 01:46 UTCGHSA enrichment
  15. 2026-09-02 23:57 UTCEG score recompute
  16. 2026-09-02 23:57 UTCGHSA enrichment
  17. 2026-09-01 13:53 UTCEPSS rescore
  18. 2026-09-01 12:10 UTCGHSA enrichment
  19. 2026-08-31 11:47 UTCEG score recompute
  20. 2026-08-31 11:47 UTCGHSA enrichment
  21. 2026-08-30 19:17 UTCEPSS rescore
  22. 2026-08-30 13:09 UTCEG score recompute
  23. 2026-08-30 13:09 UTCGHSA enrichment
  24. 2026-08-30 01:22 UTCEPSS rescore
  25. 2026-08-29 15:16 UTCEG score recompute
  26. 2026-08-29 15:16 UTCGHSA enrichment
  27. 2026-08-28 21:41 UTCEPSS rescore
  28. 2026-08-28 14:10 UTCEG score recompute▲ 1.30
  29. 2026-08-28 14:09 UTCGHSA enrichment
  30. 2026-08-28 14:09 UTCNVD updateCVSS v3 → 5.3
  31. 2026-08-28 10:22 UTCEG score recompute
  32. 2026-08-28 10:21 UTCGHSA enrichment
  33. 2026-08-27 14:25 UTCEPSS rescore
  34. 2026-08-27 11:20 UTCEG score recompute
  35. 2026-08-27 11:20 UTCGHSA enrichment
  36. 2026-08-26 14:46 UTCEPSS rescore
  37. 2026-08-26 13:27 UTCGHSA enrichment
  38. 2026-08-25 15:28 UTCEG score recompute
  39. 2026-08-25 15:27 UTCGHSA enrichment
  40. 2026-08-25 13:48 UTCEPSS rescore
  41. 2026-08-24 17:34 UTCEG score recompute
  42. 2026-08-24 17:34 UTCGHSA enrichment
  43. 2026-08-23 19:42 UTCGHSA enrichment
  44. 2026-08-22 21:51 UTCGHSA enrichment
  45. 2026-08-21 23:59 UTCEG score recompute
  46. 2026-08-21 23:59 UTCGHSA enrichment
  47. 2026-08-21 23:49 UTCEPSS rescore
  48. 2026-08-21 02:07 UTCEG score recompute
  49. 2026-08-21 02:07 UTCGHSA enrichment
  50. 2026-08-20 22:55 UTCEPSS rescore
  51. 2026-08-20 04:15 UTCEG score recompute
  52. 2026-08-20 04:15 UTCGHSA enrichment
  53. 2026-08-19 17:03 UTCEPSS rescore
  54. 2026-08-19 06:22 UTCEG score recompute
  55. 2026-08-19 06:22 UTCGHSA enrichment
  56. 2026-08-18 13:48 UTCEPSS rescore
  57. 2026-08-18 08:22 UTCEG score recompute
  58. 2026-08-18 08:22 UTCGHSA enrichment
  59. 2026-08-17 13:47 UTCEPSS rescore
  60. 2026-08-17 10:28 UTCEG score recompute
  61. 2026-08-17 10:28 UTCGHSA enrichment
  62. 2026-08-16 14:56 UTCEPSS rescore
  63. 2026-08-16 12:37 UTCGHSA enrichment
  64. 2026-08-15 14:45 UTCEG score recompute
  65. 2026-08-15 14:45 UTCGHSA enrichment
  66. 2026-08-15 01:30 UTCEPSS rescore
  67. 2026-08-14 16:52 UTCEG score recompute
  68. 2026-08-14 16:52 UTCGHSA enrichment
  69. 2026-08-13 22:00 UTCEPSS rescore
  70. 2026-08-13 18:53 UTCGHSA enrichment
  71. 2026-08-12 21:02 UTCEG score recompute
  72. 2026-08-12 21:02 UTCGHSA enrichment
  73. 2026-08-12 15:13 UTCEG score recompute
  74. 2026-08-12 15:13 UTCGHSA enrichment
  75. 2026-08-12 14:24 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20901?
CVE-2026-20901 is a medium vulnerability published on August 11, 2026. Improper input validation for some Intel(R) Xeon(R) processors within firmware may allow an escalation of privilege. Startup code and smm adversary with a privileged user combined with a high complexity attack may enable data alteration. This result may potentially occur via local access when…
When was CVE-2026-20901 disclosed?
CVE-2026-20901 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20901 actively exploited?
CVE-2026-20901 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 99.2% of all scored CVEs.
What is the CVSS score of CVE-2026-20901?
CVE-2026-20901 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2026-20901?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20901, 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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