CVE-2026-19398

MEDIUMPre-NVD 6.86.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 6.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (1st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week
6.8EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.8Exploit: None knownExposed services: Not assessed

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

An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local  administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.Refer to the '  Security Update for ASUS FA507NV / FA507NU BIOS   ' section on the ASUS Security Advisory for more information.

CVSS v3
6.8
EG Score
6.8MEDIUMmedium confidence
EG Risk
31
EG Risk 31/100

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 (value × EchelonGraph’s weight)
Severity68% × 45%
The EG Score, 6.8 of 10.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
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
1st
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

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 partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 27, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Aug 27, 2026
No fix on record yet.
Web page

ASUS Security Advisory | Latest Vulnerability Update

https://www.asus.com/security-advisory

Vendor Advisories for CVE-2026-19398(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 17× in last 7d / 60× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 116 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 16 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  2. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  3. 2026-10-12 16:26 UTCEG score recompute
  4. 2026-10-11 20:06 UTCEG score recompute
  5. 2026-10-11 17:19 UTCEG score recompute
  6. 2026-10-11 14:51 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  8. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-10-10 05:47 UTCEG score recompute
  10. 2026-10-10 05:47 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  11. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  12. 2026-10-09 03:13 UTCEG score recompute
  13. 2026-10-09 03:13 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  14. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-10-08 01:25 UTCEG score recompute
  16. 2026-10-08 01:25 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  17. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  18. 2026-10-06 22:20 UTCEG score recompute
  19. 2026-10-06 22:20 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  20. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  21. 2026-10-05 20:56 UTCEG score recompute
  22. 2026-10-05 20:56 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  23. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  24. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  25. 2026-10-04 19:40 UTCGHSA enrichmentGHSA-mqcp-4543-826g
Show 75 more
  1. 2026-10-03 16:03 UTCEG score recompute
  2. 2026-10-03 16:03 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  3. 2026-10-02 07:57 UTCEG score recompute
  4. 2026-10-02 07:56 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  5. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  6. 2026-10-01 06:26 UTCEG score recompute
  7. 2026-10-01 06:26 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  8. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  9. 2026-09-30 05:11 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  10. 2026-09-28 21:57 UTCEG score recompute
  11. 2026-09-28 21:57 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  12. 2026-09-27 20:42 UTCEG score recompute
  13. 2026-09-27 20:42 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  14. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  15. 2026-09-26 19:27 UTCEG score recompute
  16. 2026-09-26 19:27 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  17. 2026-09-25 00:42 UTCEG score recompute
  18. 2026-09-25 00:42 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  19. 2026-09-23 23:27 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  20. 2026-09-22 21:49 UTCEG score recompute
  21. 2026-09-22 21:49 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  22. 2026-09-21 20:34 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  23. 2026-09-20 19:19 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  24. 2026-09-19 18:04 UTCEG score recompute
  25. 2026-09-19 18:04 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  26. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  27. 2026-09-18 16:46 UTCEG score recompute
  28. 2026-09-18 16:46 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  29. 2026-09-17 15:31 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  30. 2026-09-16 14:08 UTCEG score recompute
  31. 2026-09-16 14:08 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  32. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  33. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  34. 2026-09-15 12:24 UTCEG score recompute
  35. 2026-09-15 12:24 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  36. 2026-09-14 11:05 UTCEG score recompute
  37. 2026-09-14 11:05 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  38. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  39. 2026-09-13 09:50 UTCEG score recompute
  40. 2026-09-13 09:50 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  41. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  42. 2026-09-12 08:35 UTCEG score recompute
  43. 2026-09-12 08:35 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  44. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  45. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  46. 2026-09-11 07:20 UTCEG score recompute
  47. 2026-09-11 07:20 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  48. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  49. 2026-09-10 06:05 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  50. 2026-09-09 04:41 UTCEG score recompute
  51. 2026-09-09 04:41 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  52. 2026-09-09 03:43 UTCEG score recompute
  53. 2026-09-09 03:43 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  54. 2026-09-09 00:45 UTCEG score recompute
  55. 2026-09-09 00:45 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  56. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  57. 2026-09-07 22:09 UTCEG score recompute
  58. 2026-09-07 22:09 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  59. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  60. 2026-09-06 20:54 UTCEG score recompute
  61. 2026-09-06 20:54 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  62. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  63. 2026-09-05 19:38 UTCEG score recompute
  64. 2026-09-05 19:38 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  65. 2026-09-04 18:23 UTCEG score recompute
  66. 2026-09-04 18:23 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  67. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  68. 2026-09-03 16:57 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  69. 2026-09-03 01:05 UTCEG score recompute
  70. 2026-09-03 01:05 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  71. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  72. 2026-09-01 23:47 UTCEG score recompute
  73. 2026-09-01 23:47 UTCGHSA enrichmentGHSA-mqcp-4543-826g
  74. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.1% · 1st percentile
  75. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.1% · 1st percentile

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Frequently asked(5)

What is CVE-2026-19398?
CVE-2026-19398 is a medium-severity vulnerability; its CVE record was published on August 27, 2026. An out-of-bounds write in the SmiFlash SMM module of ASUS FA507NU and FA507NV BIOS allows a local administrator to cause a system crash (BSOD) or BIOS corruption via a crafted software SMI (SW SMI) request with an oversized length value.Refer to the ' Security Update for ASUS FA507NV / FA507NU BIOS…
When was the CVE record for CVE-2026-19398 published?
The CVE record for CVE-2026-19398 was published on August 27, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-19398 actively exploited?
CVE-2026-19398 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19398?
CVE-2026-19398 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19398?
No fix for CVE-2026-19398 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-2026-19398 are linked in the Vendor Advisories panel on this page.

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