CVE-2026-47104

MEDIUMNVD 5.54.0▼
EchelonGraph scoreMEDIUM confidence

Score 4.0 from GitHub Security Advisory published 2026-05-27. the CNA's CVSS baseline 4.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 4 sources updated this week
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

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

libusb before version 1.0.30 contains a one-byte out-of-bounds read vulnerability in parse_iad_array() in descriptor.c that allows attackers to trigger a denial of service by supplying a malformed USB descriptor whose bLength equals size minus one, causing the bounds check to use the original buffer size instead of the remaining size. Attackers in virtualized environments with USB passthrough can supply crafted descriptors through libusb_get_active_interface_association_descriptors or libusb_get_interface_association_descriptors to read one byte past the end of the malloc allocation, resulting in a denial of service.

CVSS v3
5.5
EG Score
4.0(medium)
EPSS
3.0%
KEV
Not listed

Published

May 27, 2026

Last Modified

July 14, 2026

Advisory Details (5)

Auto-updated Jun 16, 2026
Patch available. Sources: github_commit, github_pr, github_release.
generic

libusb < 1.0.30 Out-of-Bounds Read in parse_iad_array() | Advisories | VulnCheck

https://www.vulncheck.com/advisories/libusb-out-of-bounds-read-in-parse-iad-array
github_release Patch Available

v1.0.30: libusb 1.0.30

Patch available: libusb/libusb v1.0.30

https://github.com/libusb/libusb/releases/tag/v1.0.30
github_pr

Fix/descriptor parser memory safety

Upstream fix in progress (PR #1814 · libusb/libusb, state=closed)

https://github.com/libusb/libusb/pull/1814
generic

Two memory-safety bugs in libusb/descriptor.c found by fuzzing (parse_interface NULL endpoint, parse_iad_array OOB read) · Issue #1813 · libusb/libusb · GitHub

https://github.com/libusb/libusb/issues/1813
github_commit Patch Available

commit 578ab76b4c43 (libusb/libusb)

Patch available: libusb/libusb v1.0.30-rc2 (contains commit 578ab76b4c43)

https://github.com/libusb/libusb/commit/578ab76b4c434f8b204137ab6d7310689c7a9704

Vendor Advisories for CVE-2026-47104(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 9× in last 7d / 53× 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 112 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-14 23:23 UTCNVD updateCVSS v3 → 5.5
  4. 2026-07-13 22:30 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 23:26 UTCEG score recompute
  7. 2026-07-11 23:26 UTCGHSA enrichment
  8. 2026-07-11 08:27 UTCEPSS rescore
  9. 2026-07-09 19:10 UTCEPSS rescore
  10. 2026-07-08 23:47 UTCEG score recompute
  11. 2026-07-08 23:47 UTCGHSA enrichment
  12. 2026-07-08 15:16 UTCEPSS rescore
  13. 2026-07-07 13:46 UTCEPSS rescore
  14. 2026-07-06 16:27 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-05 02:30 UTCEPSS rescore
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-01 15:07 UTCEPSS rescore
  19. 2026-07-01 10:06 UTCEG score recompute
  20. 2026-07-01 10:06 UTCGHSA enrichment
  21. 2026-06-30 23:22 UTCEPSS rescore
  22. 2026-06-29 14:09 UTCEG score recompute
  23. 2026-06-29 14:09 UTCGHSA enrichment
  24. 2026-06-29 14:06 UTCEPSS rescore
  25. 2026-06-29 14:06 UTCEPSS rescore
Show 75 more
  1. 2026-06-28 14:07 UTCEPSS rescore
  2. 2026-06-28 07:52 UTCEG score recompute
  3. 2026-06-28 07:52 UTCGHSA enrichment
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-28 04:56 UTCEPSS rescore
  6. 2026-06-27 05:46 UTCEG score recompute
  7. 2026-06-27 05:46 UTCGHSA enrichment
  8. 2026-06-27 03:08 UTCEPSS rescore
  9. 2026-06-26 03:01 UTCEG score recompute
  10. 2026-06-26 03:01 UTCGHSA enrichment
  11. 2026-06-25 13:49 UTCEPSS rescore
  12. 2026-06-25 00:54 UTCEG score recompute
  13. 2026-06-25 00:53 UTCGHSA enrichment
  14. 2026-06-24 14:05 UTCEPSS rescore
  15. 2026-06-23 21:33 UTCEPSS rescore
  16. 2026-06-23 21:33 UTCEPSS rescore
  17. 2026-06-22 14:25 UTCEPSS rescore
  18. 2026-06-22 14:25 UTCEPSS rescore
  19. 2026-06-21 14:56 UTCEPSS rescore
  20. 2026-06-21 14:56 UTCEPSS rescore
  21. 2026-06-19 19:26 UTCEPSS rescore
  22. 2026-06-19 19:26 UTCEPSS rescore
  23. 2026-06-18 17:52 UTCEPSS rescore
  24. 2026-06-18 17:52 UTCEPSS rescore
  25. 2026-06-17 17:53 UTCEPSS rescore
  26. 2026-06-17 12:33 UTCEG score recompute
  27. 2026-06-17 12:33 UTCGHSA enrichment
  28. 2026-06-16 17:53 UTCEPSS rescore
  29. 2026-06-16 09:56 UTCEG score recompute
  30. 2026-06-16 09:56 UTCGHSA enrichment
  31. 2026-06-15 17:49 UTCEPSS rescore
  32. 2026-06-15 07:48 UTCEG score recompute
  33. 2026-06-15 07:48 UTCGHSA enrichment
  34. 2026-06-14 05:29 UTCEG score recompute
  35. 2026-06-14 05:29 UTCGHSA enrichment
  36. 2026-06-13 23:00 UTCEPSS rescore
  37. 2026-06-13 03:22 UTCEG score recompute
  38. 2026-06-13 03:22 UTCGHSA enrichment
  39. 2026-06-12 23:12 UTCEPSS rescore
  40. 2026-06-12 23:12 UTCEPSS rescore
  41. 2026-06-12 01:15 UTCEG score recompute
  42. 2026-06-12 01:15 UTCGHSA enrichment
  43. 2026-06-11 14:00 UTCEPSS rescore
  44. 2026-06-10 23:08 UTCEG score recompute
  45. 2026-06-10 23:08 UTCGHSA enrichment
  46. 2026-06-10 22:18 UTCEPSS rescore
  47. 2026-06-10 13:22 UTCEPSS rescore
  48. 2026-06-10 13:22 UTCEPSS rescore
  49. 2026-06-09 21:00 UTCEG score recompute
  50. 2026-06-09 21:00 UTCGHSA enrichment
  51. 2026-06-08 18:53 UTCEG score recompute
  52. 2026-06-08 18:53 UTCGHSA enrichment
  53. 2026-06-08 14:17 UTCEPSS rescore
  54. 2026-06-08 14:17 UTCEPSS rescore
  55. 2026-06-07 15:25 UTCEPSS rescore
  56. 2026-06-07 15:25 UTCEPSS rescore
  57. 2026-06-07 14:13 UTCEG score recompute
  58. 2026-06-07 14:13 UTCGHSA enrichment
  59. 2026-06-06 13:47 UTCEPSS rescore
  60. 2026-06-06 13:47 UTCEPSS rescore
  61. 2026-06-06 12:05 UTCEG score recompute
  62. 2026-06-06 12:05 UTCGHSA enrichment
  63. 2026-06-05 22:47 UTCEPSS rescore
  64. 2026-06-05 09:59 UTCEG score recompute
  65. 2026-06-05 09:59 UTCGHSA enrichment
  66. 2026-06-05 06:10 UTCEPSS rescore
  67. 2026-06-05 06:10 UTCEPSS rescore
  68. 2026-06-04 13:12 UTCEPSS rescore
  69. 2026-06-04 13:12 UTCEPSS rescore
  70. 2026-06-04 07:52 UTCEG score recompute
  71. 2026-06-04 07:52 UTCGHSA enrichment
  72. 2026-06-03 05:44 UTCEG score recompute
  73. 2026-06-03 05:44 UTCGHSA enrichment
  74. 2026-06-02 20:13 UTCEPSS rescore
  75. 2026-06-02 03:37 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-47104?
CVE-2026-47104 is a medium vulnerability published on May 27, 2026. libusb before version 1.0.30 contains a one-byte out-of-bounds read vulnerability in parseiadarray() in descriptor.c that allows attackers to trigger a denial of service by supplying a malformed USB descriptor whose bLength equals size minus one, causing the bounds check to use the original buffer…
When was CVE-2026-47104 disclosed?
CVE-2026-47104 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47104 actively exploited?
CVE-2026-47104 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-47104?
CVE-2026-47104 has a CVSS v3 base score of 5.5 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 4.0.
How do I remediate CVE-2026-47104?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47104, 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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