CVE-2024-40766: SonicWall SonicOS Improper Access Control Vulnerability
Advisory generated from the CVE record, CISA, Exploit Observer and VEDAS: what it is, whether it is exploited, who is affected, and how to fix and detect it.
Generated by VEDAS. Scores as of 2026-11-08 00:03 UTC. Rebuilt every few hours from cve-scores, CISA KEV and vedas-signatures. How this works and its limits.
What it is
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.
Description quoted from the CVE record (assigned by sonicwall, published 2024-08-23).
Weakness: CWE-284 Improper Access Control
How it can be exploited
Exploitable over the network with low attack complexity needing no privileges and no user interaction. Impact: 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
CISA assessment (SSVC): CISA assesses exploitation as active. Automatable: yes. Technical impact: partial.
- On CISA KEV since
- 2024-09-09
- US federal deadline
- 2024-09-30
- Ransomware use
- Yes
Public exploit evidence (Exploit Observer)
Exploit Observer found 1 research write-up naming this CVE.
See all 7 references on Exploit Observer
Live scores
- EPSS
- 0.184
likely to be attacked soon - VEDAS
- 0.973
strong exploit evidence - On CISA KEV
- Yes, since 2024-09-09
- Detection rule
- No public rule yet
Thin horizontal line: the “likely exploited” threshold (EPSS 0.10, VEDAS 0.5). Shaded “no data” areas are periods when cve-scores did not publish.
Who is affected
| Product | Affected | Not affected |
|---|---|---|
| SonicWall SonicOS | version 5.9.2.14-12o and older versions version 6.5.4.14-109n and older versions version 7.0.1-5035 and older versions | Not stated |
Version ranges exactly as the CVE record states them. “Before X” means X is the first fixed version.
How to fix it
CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Vendor guidance:
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0015 (vendor-advisory)
How to detect it
There is no open VEDAS detection rule for this bug yet. It is listed on the detection gaps page if CISA has confirmed attacks.
Advisories on this CVE
- CISA, FBI and partners warn SafePay ransomware has hit at least 600 critical-infrastructure victims (full advisory)
References
Vendor advisories and patches
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2024-0015 (vendor-advisory)
Government sources
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-40766 (government-resource)
Other databases
Where this comes from
This advisory is generated automatically by VEDAS from: CVE.org record, CISA KEV, cve-scores (EPSS and VEDAS), Exploit Observer. Text in quotes is reproduced from the source; everything else is a fixed template filled with source fields. Nothing here is written by a language model. Check the vendor advisory before acting, and read how VEDAS and Exploit Observer work, and their limits.
Supporting partners
