CVE-2026-20917

MEDIUMPre-NVD 4.04.0—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 4.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 99% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
4.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.0Exploit: None knownExposed: 0

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

Exposure of sensitive information caused by incorrect data forwarding during transient execution for some Intel(R) Processors within Ring 0: Hypervisor and Kernel may allow information disclosure. System software adversary with a privileged user combined with a high complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are not 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 (high), integrity (none) and availability (none) impacts.

CVSS v3
4.0
EG Score
4.0(medium)
EG Risk
18(Track)
EG Risk 18/100SSVC: 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
Severity40% × 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 12, 2026

Advisory Details (1)

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

INTEL-SA-01423

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01423.html

Vendor Advisories for CVE-2026-20917(1)

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

Affected Packages

(7 across 7 ecosystems)
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
intel-ucode—20260812-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
intel-ucode—20260812-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
intel-ucode—20260812-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
intel-ucode—20260812-r0—
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 18× in last 7d / 68× 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. 2026-09-18 12:55 UTCEG score recompute
  2. 2026-09-18 12:55 UTCGHSA enrichment
  3. 2026-09-17 12:18 UTCEG score recompute
  4. 2026-09-17 12:18 UTCGHSA enrichment
  5. 2026-09-16 14:07 UTCEPSS rescore
  6. 2026-09-16 10:54 UTCEG score recompute
  7. 2026-09-16 10:54 UTCGHSA enrichment
  8. 2026-09-16 05:15 UTCEPSS rescore
  9. 2026-09-15 08:41 UTCEG score recompute
  10. 2026-09-15 08:41 UTCGHSA enrichment
  11. 2026-09-14 08:28 UTCEG score recompute
  12. 2026-09-14 08:28 UTCGHSA enrichment
  13. 2026-09-13 16:47 UTCEPSS rescore
  14. 2026-09-13 08:16 UTCEG score recompute
  15. 2026-09-13 08:16 UTCGHSA enrichment
  16. 2026-09-12 15:01 UTCEPSS rescore
  17. 2026-09-12 08:03 UTCEG score recompute
  18. 2026-09-12 08:03 UTCGHSA enrichment
  19. 2026-09-11 14:52 UTCEPSS rescore
  20. 2026-09-11 07:50 UTCEG score recompute
  21. 2026-09-11 07:50 UTCGHSA enrichment
  22. 2026-09-10 09:34 UTCEPSS rescore
  23. 2026-09-10 07:37 UTCGHSA enrichment
  24. 2026-09-09 07:24 UTCEG score recompute
  25. 2026-09-09 07:24 UTCGHSA enrichment
Show 73 more
  1. 2026-09-08 22:00 UTCEPSS rescore
  2. 2026-09-08 07:11 UTCGHSA enrichment
  3. 2026-09-07 06:03 UTCEG score recompute
  4. 2026-09-07 06:03 UTCGHSA enrichment
  5. 2026-09-06 13:47 UTCEPSS rescore
  6. 2026-09-06 13:47 UTCEPSS rescore
  7. 2026-09-06 02:12 UTCEG score recompute
  8. 2026-09-06 02:12 UTCGHSA enrichment
  9. 2026-09-05 01:59 UTCEG score recompute
  10. 2026-09-05 01:59 UTCGHSA enrichment
  11. 2026-09-04 01:46 UTCGHSA enrichment
  12. 2026-09-02 23:57 UTCEG score recompute
  13. 2026-09-02 23:57 UTCGHSA enrichment
  14. 2026-09-01 13:53 UTCEPSS rescore
  15. 2026-09-01 12:10 UTCEG score recompute
  16. 2026-09-01 12:10 UTCGHSA enrichment
  17. 2026-09-01 04:39 UTCEPSS rescore
  18. 2026-08-31 09:54 UTCEG score recompute
  19. 2026-08-31 09:54 UTCGHSA enrichment
  20. 2026-08-30 19:17 UTCEPSS rescore
  21. 2026-08-30 09:32 UTCGHSA enrichment
  22. 2026-08-29 09:08 UTCEG score recompute
  23. 2026-08-29 09:07 UTCGHSA enrichment
  24. 2026-08-28 21:41 UTCEPSS rescore
  25. 2026-08-28 00:53 UTCEG score recompute
  26. 2026-08-28 00:53 UTCGHSA enrichment
  27. 2026-08-27 14:25 UTCEPSS rescore
  28. 2026-08-27 00:06 UTCEG score recompute
  29. 2026-08-27 00:06 UTCGHSA enrichment
  30. 2026-08-26 14:46 UTCEPSS rescore
  31. 2026-08-25 23:52 UTCEG score recompute
  32. 2026-08-25 23:52 UTCGHSA enrichment
  33. 2026-08-25 13:48 UTCEPSS rescore
  34. 2026-08-24 23:40 UTCEG score recompute
  35. 2026-08-24 23:40 UTCGHSA enrichment
  36. 2026-08-23 23:27 UTCEG score recompute
  37. 2026-08-23 23:27 UTCGHSA enrichment
  38. 2026-08-23 00:19 UTCEPSS rescore
  39. 2026-08-22 23:14 UTCGHSA enrichment
  40. 2026-08-21 23:01 UTCEG score recompute
  41. 2026-08-21 23:01 UTCGHSA enrichment
  42. 2026-08-20 22:55 UTCEPSS rescore
  43. 2026-08-20 22:47 UTCGHSA enrichment
  44. 2026-08-19 22:34 UTCEG score recompute
  45. 2026-08-19 22:34 UTCGHSA enrichment
  46. 2026-08-19 17:03 UTCEPSS rescore
  47. 2026-08-18 22:21 UTCEG score recompute
  48. 2026-08-18 22:21 UTCGHSA enrichment
  49. 2026-08-18 13:48 UTCEPSS rescore
  50. 2026-08-17 22:08 UTCEG score recompute
  51. 2026-08-17 22:08 UTCGHSA enrichment
  52. 2026-08-17 13:47 UTCEPSS rescore
  53. 2026-08-16 21:54 UTCEG score recompute
  54. 2026-08-16 21:54 UTCGHSA enrichment
  55. 2026-08-16 14:56 UTCEPSS rescore
  56. 2026-08-16 02:14 UTCEPSS rescore
  57. 2026-08-15 21:41 UTCEG score recompute
  58. 2026-08-15 21:41 UTCGHSA enrichment
  59. 2026-08-15 01:30 UTCEPSS rescore
  60. 2026-08-14 21:27 UTCEG score recompute
  61. 2026-08-14 21:27 UTCGHSA enrichment
  62. 2026-08-13 22:00 UTCEPSS rescore
  63. 2026-08-13 21:14 UTCGHSA enrichment
  64. 2026-08-12 21:02 UTCGHSA enrichment
  65. 2026-08-12 14:24 UTCEG score recompute
  66. 2026-08-12 14:24 UTCGHSA enrichment
  67. 2026-08-12 13:50 UTCEPSS rescore
  68. 2026-08-12 13:25 UTCEG score recompute
  69. 2026-08-12 13:25 UTCGHSA enrichment
  70. 2026-08-11 18:37 UTCEG score recompute
  71. 2026-08-11 18:37 UTCGHSA enrichment
  72. 2026-08-11 18:05 UTCEG score recompute
  73. 2026-08-11 18:00 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-20917?
CVE-2026-20917 is a medium vulnerability published on August 11, 2026. Exposure of sensitive information caused by incorrect data forwarding during transient execution for some Intel(R) Processors within Ring 0: Hypervisor and Kernel may allow information disclosure. System software adversary with a privileged user combined with a high complexity attack may enable…
When was CVE-2026-20917 disclosed?
CVE-2026-20917 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 12, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20917 actively exploited?
CVE-2026-20917 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 98.5% of all scored CVEs.
What is the CVSS score of CVE-2026-20917?
CVE-2026-20917 has a CVSS v3 base score of 4.0 (NVD).
How do I remediate CVE-2026-20917?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20917, 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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