CVE-2025-54509

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 97% 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.

Improper access control for register interface in the Input-Output Memory Management Unit (IOMMU) could allow a privileged attacker to cause non-coherent accesses by the AMD Secure Processor (ASP), potentially resulting in loss of integrity.

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
3%
KEV
Not listed

Published

June 9, 2026

Last Modified

July 23, 2026

References (1)

Vendor Advisories for CVE-2025-54509(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 / 81× 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 180 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2025-54509?
CVE-2025-54509 is a medium vulnerability published on June 9, 2026. Improper access control for register interface in the Input-Output Memory Management Unit (IOMMU) could allow a privileged attacker to cause non-coherent accesses by the AMD Secure Processor (ASP), potentially resulting in loss of integrity.
When was CVE-2025-54509 disclosed?
CVE-2025-54509 was first published in the National Vulnerability Database on June 9, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-54509 actively exploited?
CVE-2025-54509 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 97.3% of all scored CVEs.
What is the CVSS score of CVE-2025-54509?
CVE-2025-54509 has a CVSS v3 base score of 4.0 (NVD).
How do I remediate CVE-2025-54509?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-54509, 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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