CVE-2026-63866

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-19. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:linux, epss, ghsa
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link()

Clear WCID pointer removing the sta link in mt7996_mac_sta_deinit_link routine.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
16%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 5, 2026

Advisory Details (3)

Auto-updated Jul 20, 2026
No patch confirmed yet.
generic

wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/88973240dc7c976dd320b36a9e6d925c9be083ae
generic

wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c575459b485c47615491b1fd29f04b43fdc3da56
generic

wifi: mt76: mt7996: Clear wcid pointer in mt7996_mac_sta_deinit_link() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/455a48685feebf2d9c1656caad77f9ba1da7b06e

Vendor Advisories for CVE-2026-63866(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(5)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (137 versions)7.0.10-1—

All Vendor Advisories

(5)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 34× in last 7d / 165× 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 293 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-63866?
CVE-2026-63866 is a high vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Clear wcid pointer in mt7996macstadeinitlink() Clear WCID pointer removing the sta link in mt7996macstadeinitlink routine.
When was CVE-2026-63866 disclosed?
CVE-2026-63866 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-63866 actively exploited?
CVE-2026-63866 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 84.5% of all scored CVEs.
What is the CVSS score of CVE-2026-63866?
CVE-2026-63866 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-63866?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63866, 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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