CVE-2026-46136

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: 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:

wifi: mt76: mt7921: fix a potential clc buffer length underflow

The buf_len is used to limit the iterations for retrieving the country power setting and may underflow under certain conditions due to changes in the power table in CLC.

This underflow leads to an almost infinite loop or an invalid power setting resulting in driver initialization failure.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.9%
KEV
Not listed

Published

May 28, 2026

Last Modified

June 24, 2026

Advisory Details (6)

Auto-updated Jun 24, 2026
No patch confirmed yet.
generic

wifi: mt76: mt7921: fix a potential clc buffer length underflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e451c325b000b9a0081fd93bc6d103d6943d4b55
generic

wifi: mt76: mt7921: fix a potential clc buffer length underflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a0111847f0b4f6023f6dd320114697514e024ba3
generic

wifi: mt76: mt7921: fix a potential clc buffer length underflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/90cc573fd2f46ddbc2c329e7814b5ba3deb7b939
generic

wifi: mt76: mt7921: fix a potential clc buffer length underflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5373f8b19e568b5c217832b9bbef165bd2b2df14
generic

wifi: mt76: mt7921: fix a potential clc buffer length underflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/2a79b1a492bcfa725383b6580cd93a6862308c85
generic

wifi: mt76: mt7921: fix a potential clc buffer length underflow - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0aa63d33742b805d1a218d18d12b983cce4b2f7b

Vendor Advisories for CVE-2026-46136(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 11× in last 7d / 83× 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 124 total refreshes for this CVE.

  1. 2026-07-16 10:25 UTCEG score recompute
  2. 2026-07-16 10:25 UTCGHSA enrichment
  3. 2026-07-15 16:57 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-13 22:30 UTCEPSS rescore
  6. 2026-07-13 06:13 UTCEPSS rescore
  7. 2026-07-12 05:46 UTCEPSS rescore
  8. 2026-07-11 21:20 UTCEG score recompute
  9. 2026-07-11 21:20 UTCVendor advisory
  10. 2026-07-11 21:20 UTCGHSA enrichment
  11. 2026-07-09 19:10 UTCEPSS rescore
  12. 2026-07-08 18:33 UTCEG score recompute
  13. 2026-07-08 18:33 UTCVendor advisory
  14. 2026-07-08 18:33 UTCGHSA enrichment
  15. 2026-07-08 15:16 UTCEPSS rescore
  16. 2026-07-07 13:46 UTCEPSS rescore
  17. 2026-07-06 16:27 UTCEPSS rescore
  18. 2026-07-05 02:30 UTCEPSS rescore
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-02 14:17 UTCEG score recompute
  21. 2026-07-02 14:17 UTCVendor advisory
  22. 2026-07-02 14:17 UTCGHSA enrichment
  23. 2026-07-01 15:07 UTCEPSS rescore
  24. 2026-07-01 14:05 UTCEG score recompute
  25. 2026-07-01 14:05 UTCVendor advisory
Show 75 more
  1. 2026-07-01 14:05 UTCGHSA enrichment
  2. 2026-07-01 03:13 UTCEG score recompute
  3. 2026-07-01 03:13 UTCVendor advisory
  4. 2026-07-01 03:13 UTCGHSA enrichment
  5. 2026-06-30 23:22 UTCEPSS rescore
  6. 2026-06-30 02:02 UTCEG score recompute
  7. 2026-06-30 02:02 UTCVendor advisory
  8. 2026-06-30 02:02 UTCGHSA enrichment
  9. 2026-06-29 14:06 UTCEPSS rescore
  10. 2026-06-29 14:06 UTCEPSS rescore
  11. 2026-06-29 13:45 UTCEG score recompute
  12. 2026-06-29 13:45 UTCVendor advisory
  13. 2026-06-29 13:45 UTCGHSA enrichment
  14. 2026-06-28 16:29 UTCEG score recompute
  15. 2026-06-28 16:29 UTCVendor advisory
  16. 2026-06-28 16:29 UTCGHSA enrichment
  17. 2026-06-28 14:07 UTCEPSS rescore
  18. 2026-06-28 05:11 UTCEG score recompute
  19. 2026-06-28 05:11 UTCVendor advisory
  20. 2026-06-28 05:10 UTCGHSA enrichment
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 04:56 UTCEPSS rescore
  23. 2026-06-27 18:20 UTCEG score recompute
  24. 2026-06-27 18:20 UTCVendor advisory
  25. 2026-06-27 18:20 UTCGHSA enrichment
  26. 2026-06-27 05:30 UTCEG score recompute
  27. 2026-06-27 05:30 UTCVendor advisory
  28. 2026-06-27 05:30 UTCGHSA enrichment
  29. 2026-06-27 03:08 UTCEPSS rescore
  30. 2026-06-26 16:53 UTCEG score recompute
  31. 2026-06-26 16:53 UTCVendor advisory
  32. 2026-06-26 16:53 UTCGHSA enrichment
  33. 2026-06-25 20:29 UTCEG score recompute
  34. 2026-06-25 20:29 UTCVendor advisory
  35. 2026-06-25 20:29 UTCGHSA enrichment
  36. 2026-06-25 13:49 UTCEPSS rescore
  37. 2026-06-25 09:39 UTCEG score recompute
  38. 2026-06-25 09:39 UTCVendor advisory
  39. 2026-06-25 09:39 UTCGHSA enrichment
  40. 2026-06-24 22:49 UTCEG score recompute▲ 7.80
  41. 2026-06-24 22:49 UTCVendor advisory
  42. 2026-06-24 22:49 UTCGHSA enrichment
  43. 2026-06-24 18:02 UTCNVD updateCVSS v3 → 7.8 · severity → HIGH
  44. 2026-06-24 14:05 UTCEPSS rescore
  45. 2026-06-23 21:33 UTCEPSS rescore
  46. 2026-06-23 21:33 UTCEPSS rescore
  47. 2026-06-22 14:25 UTCEPSS rescore
  48. 2026-06-22 14:25 UTCEPSS rescore
  49. 2026-06-21 14:56 UTCEPSS rescore
  50. 2026-06-21 14:56 UTCEPSS rescore
  51. 2026-06-21 01:59 UTCEPSS rescore
  52. 2026-06-21 01:59 UTCEPSS rescore
  53. 2026-06-19 19:26 UTCEPSS rescore
  54. 2026-06-19 19:26 UTCEPSS rescore
  55. 2026-06-18 17:52 UTCEPSS rescore
  56. 2026-06-18 17:52 UTCEPSS rescore
  57. 2026-06-17 17:53 UTCEPSS rescore
  58. 2026-06-16 17:52 UTCEPSS rescore
  59. 2026-06-16 02:13 UTCVendor advisory
  60. 2026-06-16 02:13 UTCGHSA enrichment
  61. 2026-06-15 17:49 UTCEPSS rescore
  62. 2026-06-14 23:28 UTCMITRE cvelistV5
  63. 2026-06-13 23:00 UTCEPSS rescore
  64. 2026-06-13 02:01 UTCVendor advisory
  65. 2026-06-13 02:01 UTCGHSA enrichment
  66. 2026-06-12 23:12 UTCEPSS rescore
  67. 2026-06-12 23:12 UTCEPSS rescore
  68. 2026-06-11 14:00 UTCEPSS rescore
  69. 2026-06-10 22:18 UTCEPSS rescore
  70. 2026-06-10 13:22 UTCEPSS rescore
  71. 2026-06-10 13:22 UTCEPSS rescore
  72. 2026-06-10 01:49 UTCGHSA enrichment
  73. 2026-06-08 14:17 UTCEPSS rescore
  74. 2026-06-08 14:17 UTCEPSS rescore
  75. 2026-06-07 15:25 UTCEPSS rescore

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-46136?
CVE-2026-46136 is a high vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: fix a potential clc buffer length underflow The buf_len is used to limit the iterations for retrieving the country power setting and may underflow under certain conditions due to changes in the power table in…
When was CVE-2026-46136 disclosed?
CVE-2026-46136 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on June 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46136 actively exploited?
CVE-2026-46136 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46136?
CVE-2026-46136 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-46136?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46136, 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.

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