CVE-2026-43436

MEDIUMNVD 5.55.5
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-08. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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.

In the Linux kernel, the following vulnerability has been resolved:

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces

The Scarlett2 mixer quirk in USB-audio driver may hit a NULL dereference when a malformed USB descriptor is passed, since it assumes the presence of an endpoint in the parsed interface in scarlett2_find_fc_interface(), as reported by fuzzer.

For avoiding the NULL dereference, just add the sanity check of bNumEndpoints and skip the invalid interface.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
2.4%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 21, 2026

Advisory Details (6)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/df1d8abf36ca3681c21a6809eaa9a1e01ef897a6
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c5c5a6c53cf3b658f1d4512dfa61f3cd25bc34ba
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b267255c15d2a5b90c4e926146aa155e5161e264
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b014cc945baba75816cda0cf8934be87c9ed4947
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3d542cf3c4c854cdf5d58049771f68926b9eb2b9
generic

ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/3d4f23885e4b90347c9a1d779af6e79a99b5172a

Vendor Advisories for CVE-2026-43436(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 7× in last 7d / 37× 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 106 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-08 15:16 UTCEPSS rescore
  9. 2026-07-06 16:27 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-01 15:06 UTCEPSS rescore
  13. 2026-06-30 23:22 UTCEPSS rescore
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-28 14:07 UTCEPSS rescore
  16. 2026-06-28 04:56 UTCEPSS rescore
  17. 2026-06-28 04:51 UTCEG score recompute
  18. 2026-06-28 04:51 UTCGHSA enrichment
  19. 2026-06-27 03:08 UTCEPSS rescore
  20. 2026-06-26 21:21 UTCEG score recompute
  21. 2026-06-26 21:21 UTCGHSA enrichment
  22. 2026-06-25 13:49 UTCEPSS rescore
  23. 2026-06-25 13:49 UTCEPSS rescore
  24. 2026-06-24 14:05 UTCEPSS rescore
  25. 2026-06-23 21:33 UTCEPSS rescore
Show 75 more
  1. 2026-06-22 14:25 UTCEPSS rescore
  2. 2026-06-22 14:25 UTCEPSS rescore
  3. 2026-06-21 14:56 UTCEPSS rescore
  4. 2026-06-21 14:56 UTCEPSS rescore
  5. 2026-06-21 01:59 UTCEPSS rescore
  6. 2026-06-19 19:25 UTCEPSS rescore
  7. 2026-06-18 17:52 UTCEPSS rescore
  8. 2026-06-18 17:52 UTCEPSS rescore
  9. 2026-06-17 17:53 UTCEPSS rescore
  10. 2026-06-16 17:52 UTCEPSS rescore
  11. 2026-06-16 08:12 UTCEG score recompute
  12. 2026-06-16 08:12 UTCGHSA enrichment
  13. 2026-06-15 17:49 UTCEPSS rescore
  14. 2026-06-15 00:36 UTCEG score recompute
  15. 2026-06-15 00:36 UTCGHSA enrichment
  16. 2026-06-14 02:36 UTCEG score recompute
  17. 2026-06-14 02:35 UTCGHSA enrichment
  18. 2026-06-13 23:00 UTCEPSS rescore
  19. 2026-06-12 23:12 UTCEPSS rescore
  20. 2026-06-12 23:12 UTCEPSS rescore
  21. 2026-06-12 12:39 UTCEG score recompute
  22. 2026-06-12 12:39 UTCGHSA enrichment
  23. 2026-06-11 14:40 UTCEG score recompute
  24. 2026-06-11 14:40 UTCGHSA enrichment
  25. 2026-06-11 14:00 UTCEPSS rescore
  26. 2026-06-10 22:18 UTCEPSS rescore
  27. 2026-06-10 16:39 UTCEG score recompute
  28. 2026-06-10 16:39 UTCGHSA enrichment
  29. 2026-06-10 13:22 UTCEPSS rescore
  30. 2026-06-10 13:22 UTCEPSS rescore
  31. 2026-06-09 18:40 UTCEG score recompute
  32. 2026-06-09 18:40 UTCGHSA enrichment
  33. 2026-06-08 20:41 UTCEG score recompute
  34. 2026-06-08 20:41 UTCGHSA enrichment
  35. 2026-06-08 14:17 UTCEPSS rescore
  36. 2026-06-08 14:17 UTCEPSS rescore
  37. 2026-06-07 18:53 UTCEG score recompute
  38. 2026-06-07 18:53 UTCGHSA enrichment
  39. 2026-06-07 15:25 UTCEPSS rescore
  40. 2026-06-07 15:25 UTCEPSS rescore
  41. 2026-06-06 20:53 UTCEG score recompute
  42. 2026-06-06 20:53 UTCGHSA enrichment
  43. 2026-06-06 13:47 UTCEPSS rescore
  44. 2026-06-06 13:47 UTCEPSS rescore
  45. 2026-06-05 22:52 UTCEG score recompute
  46. 2026-06-05 22:52 UTCGHSA enrichment
  47. 2026-06-05 22:47 UTCEPSS rescore
  48. 2026-06-05 06:10 UTCEPSS rescore
  49. 2026-06-05 06:10 UTCEPSS rescore
  50. 2026-06-05 00:40 UTCEG score recompute
  51. 2026-06-05 00:40 UTCGHSA enrichment
  52. 2026-06-04 13:12 UTCEPSS rescore
  53. 2026-06-04 13:12 UTCEPSS rescore
  54. 2026-06-04 01:42 UTCEG score recompute
  55. 2026-06-04 01:42 UTCGHSA enrichment
  56. 2026-06-03 03:42 UTCEG score recompute
  57. 2026-06-03 03:42 UTCGHSA enrichment
  58. 2026-06-02 20:13 UTCEPSS rescore
  59. 2026-06-02 05:43 UTCEG score recompute
  60. 2026-06-02 05:43 UTCGHSA enrichment
  61. 2026-06-01 13:52 UTCEPSS rescore
  62. 2026-06-01 13:52 UTCEPSS rescore
  63. 2026-06-01 07:43 UTCEG score recompute 5.50
  64. 2026-06-01 07:43 UTCGHSA enrichment
  65. 2026-05-31 22:30 UTCEPSS rescore
  66. 2026-05-31 22:30 UTCEPSS rescore
  67. 2026-05-31 00:16 UTCEPSS rescore
  68. 2026-05-31 00:16 UTCEPSS rescore
  69. 2026-05-29 13:44 UTCEPSS rescore
  70. 2026-05-29 13:44 UTCEPSS rescore
  71. 2026-05-28 13:44 UTCEPSS rescore
  72. 2026-05-28 13:44 UTCEPSS rescore
  73. 2026-05-27 13:40 UTCEPSS rescore
  74. 2026-05-27 13:40 UTCEPSS rescore
  75. 2026-05-26 13:44 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43436?
CVE-2026-43436 is a medium vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Check endpoint numbers at parsing Scarlett2 mixer interfaces The Scarlett2 mixer quirk in USB-audio driver may hit a NULL dereference when a malformed USB descriptor is passed, since it assumes the presence of an…
When was CVE-2026-43436 disclosed?
CVE-2026-43436 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43436 actively exploited?
CVE-2026-43436 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43436?
CVE-2026-43436 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43436?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43436, 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-2026-43436

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