CVE-2024-40766

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2024-09-09), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8EG
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS PROB: 18%CVSS: 9.8Exploit: cisa kev · ssvc active · kev ransomware · epss top5pctExposed: 0

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

An improper access control vulnerability has been identified in the SonicWall SonicOS management access, potentially leading to unauthorized resource access and in specific conditions, causing the firewall to crash. This issue affects SonicWall Firewall Gen 5 and Gen 6 devices, as well as Gen 7 devices running SonicOS 7.0.1-5035 and older versions.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Attend)
EG Risk 99/100SSVC: Attend

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%
Exploitation100% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
18%
EPSS %ILE
97%
KEV
⚠ Exploited

Published

August 23, 2024

Last Modified

October 31, 2025

Advisory Details (2)

Auto-updated Jul 28, 2026
⚠️ Active exploitation confirmed. Patch available. Sources: cisa.
cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-40766
generic

Security Advisory

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0015

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 40× in last 7d / 232× 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 489 total refreshes for this CVE.

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

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Frequently asked(6)

What is CVE-2024-40766?
CVE-2024-40766 is a critical vulnerability published on August 23, 2024. An improper access control vulnerability has been identified in the SonicWall SonicOS management access, potentially leading to unauthorized resource access and in specific conditions, causing the firewall to crash. This issue affects SonicWall Firewall Gen 5 and Gen 6 devices, as well as Gen 7…
When was CVE-2024-40766 disclosed?
CVE-2024-40766 was first published in the National Vulnerability Database on August 23, 2024, with the most recent update on October 31, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-40766 actively exploited?
Yes. CISA added CVE-2024-40766 to the Known Exploited Vulnerabilities catalog on September 9, 2024, affecting SonicWall SonicOS. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2024-40766?
CVE-2024-40766 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2024-40766?
CVE-2024-40766 affects SonicWall SonicOS. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2024-40766?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-40766, 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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