CVE-2026-20898

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% 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
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 0

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

Improper access control in the firmware for some in Alias Checking Trusted Module for some Intel(R) Xeon(R) processors may allow an escalation of privilege. Startup code and SMM adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. 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 (high), integrity (high) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.

CVSS v3
8.5
EG Score
8.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 12, 2026

Advisory Details (1)

Auto-updated Aug 11, 2026
No patch confirmed yet.
generic

INTEL-SA-01439

https://intel.com/content/www/us/en/security-center/advisory/intel-sa-01439.html

Vendor Advisories for CVE-2026-20898(2)

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 30× in last 7d / 46× 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. 2026-08-20 03:36 UTCEG score recompute
  2. 2026-08-20 03:36 UTCGHSA enrichment
  3. 2026-08-19 17:03 UTCEPSS rescore
  4. 2026-08-19 16:42 UTCGHSA enrichment
  5. 2026-08-19 05:41 UTCGHSA enrichment
  6. 2026-08-18 18:48 UTCEG score recompute
  7. 2026-08-18 18:48 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-18 07:53 UTCGHSA enrichment
  10. 2026-08-17 20:57 UTCEG score recompute
  11. 2026-08-17 20:57 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 10:02 UTCGHSA enrichment
  14. 2026-08-16 23:09 UTCEG score recompute
  15. 2026-08-16 23:09 UTCGHSA enrichment
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 12:14 UTCEG score recompute
  18. 2026-08-16 12:14 UTCGHSA enrichment
  19. 2026-08-16 02:14 UTCEPSS rescore
  20. 2026-08-16 01:21 UTCGHSA enrichment
  21. 2026-08-15 14:27 UTCGHSA enrichment
  22. 2026-08-15 03:33 UTCEG score recompute
  23. 2026-08-15 03:33 UTCGHSA enrichment
  24. 2026-08-15 01:30 UTCEPSS rescore
  25. 2026-08-14 16:38 UTCGHSA enrichment
Show 21 more
  1. 2026-08-14 05:44 UTCEG score recompute
  2. 2026-08-14 05:44 UTCGHSA enrichment
  3. 2026-08-13 22:00 UTCEPSS rescore
  4. 2026-08-13 18:50 UTCGHSA enrichment
  5. 2026-08-13 07:56 UTCGHSA enrichment
  6. 2026-08-12 21:02 UTCEG score recompute
  7. 2026-08-12 21:02 UTCGHSA enrichment
  8. 2026-08-12 15:24 UTCEG score recompute
  9. 2026-08-12 15:24 UTCGHSA enrichment
  10. 2026-08-12 13:50 UTCEPSS rescore
  11. 2026-08-12 05:37 UTCEG score recompute
  12. 2026-08-12 05:37 UTCGHSA enrichment
  13. 2026-08-12 04:27 UTCEG score recompute
  14. 2026-08-12 04:27 UTCGHSA enrichment
  15. 2026-08-11 19:18 UTCEG score recompute
  16. 2026-08-11 19:18 UTCGHSA enrichment
  17. 2026-08-11 19:04 UTCEG score recompute
  18. 2026-08-11 19:04 UTCGHSA enrichment
  19. 2026-08-11 17:44 UTCEG score recompute
  20. 2026-08-11 16:46 UTCEG score recompute
  21. 2026-08-11 16:45 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20898?
CVE-2026-20898 is a high vulnerability published on August 11, 2026. Improper access control in the firmware for some in Alias Checking Trusted Module for some Intel(R) Xeon(R) processors may allow an escalation of privilege. Startup code and SMM adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result…
When was CVE-2026-20898 disclosed?
CVE-2026-20898 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-2026-20898 actively exploited?
CVE-2026-20898 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 98.0% of all scored CVEs.
What is the CVSS score of CVE-2026-20898?
CVE-2026-20898 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-20898?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20898, 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-2026-20898

Explore →

Is Your Infrastructure Affected by CVE-2026-20898?

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

Start Free Scan →Browse All CVEs