CVE-2026-8921

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: 0.2%, top 95% 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
8.5EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.5Exploit: None knownExposed services: Not assessed

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

External Control of File Name or Path vulnerability in ASUS Business Manager allows a local user to execute arbitrary code with SYSTEM privileges via a tampered IPC message. Refer to the ' Security Update for ASUS Business Manager ' section on the ASUS Security Advisory for more information.

CVSS v3
8.5
EG Score
8.5HIGHmedium confidence
EG Risk
38
EG Risk 38/100

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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
EPSS PROB
0.2%
EPSS %ILE
4th
KEV
Not listed

Published

July 3, 2026

Last Modified

September 17, 2026

Advisory Details (1)

Auto-updated Jul 6, 2026
🔬 Proof of concept available. No fix on record yet.
generic🟡 PoC Available

ASUS Security Advisory | Latest Vulnerability Update

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

Vendor Advisories for CVE-2026-8921(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 6× in last 7d / 39× 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 227 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-8921?
CVE-2026-8921 is a high vulnerability published on July 3, 2026. External Control of File Name or Path vulnerability in ASUS Business Manager allows a local user to execute arbitrary code with SYSTEM privileges via a tampered IPC message. Refer to the ' Security Update for ASUS Business Manager ' section on the ASUS Security Advisory for more information.
When was CVE-2026-8921 disclosed?
CVE-2026-8921 was first published on July 3, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8921 actively exploited?
CVE-2026-8921 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-8921?
CVE-2026-8921 has a CVSS base score of 8.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-8921?
No fix for CVE-2026-8921 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-2026-8921 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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