9.3
Critical
CVE-2024-40766 SonicWall SonicOS Improper Access Control Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Ransomware campaigns
Known to be used
Weakness
CWE-284
Description
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| SonicOS | Versions not published |
Other CVEs of SonicOS
The 75 CVEs of SonicOS →
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A weak password hashing vulnerability has been identified on SonicOS virtual appliances, which in specific conditions…
5.1
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A pre-authentication heap-based buffer overflow vulnerability has been identified in the SonicOS TACACS+…
5.9
Medium
CVE-2026-77708
A pre-authentication stack-based buffer overflow vulnerability has been identified in the SonicOS TACACS+ authentication…
5.9
Medium
CVE-2026-19868
SonicWall SonicOS SSLVPN Use of Single-factor Authentication Vulnerability
7.5
High