CVE-2026-7763

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-05. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

A heap-based buffer overflow vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink 2 software versions prior to 2.11.13 allows an unauthenticated attacker within radio range to cause a Denial of Service (kernel panic) or potentially achieve Remote Code Execution via a crafted 802.11ah beacon frame containing a malformed Traffic Indication Map (TIM) Information Element. The function morse_page_slicing_process_tim_element() in page_slicing.c derives the TIM bitmap length directly from a received IE field without validating it against the fixed-size destination buffer before passing it to memset and memcpy operations, allowing up to 252 bytes of attacker-controlled data to be written beyond the buffer boundary. Because beacons are broadcast frames processed during passive scanning, no authentication, association, or user interaction is required.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
44%
KEV
Not listed

Published

June 5, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Sep 12, 2026
No patch confirmed yet.
generic Patch Available

MM-SA-2026-001: morse.ko TIM IE Overflow | Morse Micro

https://www.morsemicro.com/security-advisories/MM-SA-2026-001

Vendor Advisories for CVE-2026-7763(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 51× 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 419 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-7763?
CVE-2026-7763 is a critical vulnerability published on June 5, 2026. A heap-based buffer overflow vulnerability in the morse.ko HaLow Wi-Fi kernel driver in Morse Micro HaLowLink 2 software versions prior to 2.11.13 allows an unauthenticated attacker within radio range to cause a Denial of Service (kernel panic) or potentially achieve Remote Code Execution via a…
When was CVE-2026-7763 disclosed?
CVE-2026-7763 was first published in the National Vulnerability Database on June 5, 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-2026-7763 actively exploited?
CVE-2026-7763 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.3% of all scored CVEs.
What is the CVSS score of CVE-2026-7763?
CVE-2026-7763 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-7763?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7763, 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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