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: <0.1%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

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
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA SSVC

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%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
<0.1%
EPSS %ILE
below the 1st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

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 rangeFix by version rangeDependents
intel-microcode0.20080131-1 ... 3.20260227.1 (210 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
intel-microcode0.20080131-1 ... 3.20260227.1 (210 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
intel-microcode0.20080131-1 ... 3.20260227.1 (210 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 62× 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 139 total refreshes for this CVE.

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

Related CVEs(same product + 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 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 <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-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?
No fix for CVE-2026-20901 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-20901 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-20901

Explore →

Is Your Infrastructure Affected by CVE-2026-20901?

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

Book a Demo →Browse All CVEs