SonicWall SonicOS Improper Access Control Vulnerability
SonicWall — SonicOS
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.
9.3
18.2%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- None
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L
- Published
- Aug 23, 2024
- Modified
- Sep 21, 2026
- Added to KEV
- Sep 9, 2024
- Federal patch due
- Sep 30, 2024
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2024-40766, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit — cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2024-40766 were found at last check. Absence here is not proof no exploit exists — see the references below for vendor advisories and write-ups.
References
How this class of flaw gets exploited
Frequently asked questions
What is CVE-2024-40766?
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.
How severe is CVE-2024-40766?
CVE-2024-40766 has a CVSS base score of 9.3 out of 10 (CVSS 3.1).
Is CVE-2024-40766 actively exploited in the wild?
Yes. CVE-2024-40766 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Sep 9, 2024, meaning CISA has confirmed evidence of active exploitation. It is also flagged as used in ransomware campaigns.
What is the EPSS score for CVE-2024-40766?
18.2% - meaning FIRST.org's EPSS model estimates a 18.2% probability this vulnerability will be exploited in the wild within 30 days (97% percentile among all scored CVEs).
What type of vulnerability is CVE-2024-40766?
CVE-2024-40766 is classified under CWE-284 (CWE-284 Improper Access Control).
Cross-checked against
Impactr finds and proves whether CVE-2024-40766 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.