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SonicWall released security updates to fix a critical flaw in its firewalls. If exploited, this flaw could give unauthorized access to malicious actors. The vulnerability is known as CVE-2024-40766 and has a CVSS score of 9.3. It is an access control issue.
“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,” the company said in an advisory released last week.
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“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.”
The issue has been addressed in the below versions:
SOHO (Gen 5 Firewalls) – 5.9.2.14-13o
Gen 6 Firewalls – 6.5.2.8-2n (for SM9800, NSsp 12400, and NSsp 12800) and 6.5.4.15.116n (for other Gen 6 Firewall appliances)
“SonicWall recommends users to install the latest firmware.”
The vendor of the networking equipment hasn’t said whether the flaw is being exploited. However, users need to quickly apply the patches to protect against potential threats.
Last year, Mandiant, owned by Google, discovered that a group linked to China, known as UNC4540, attacked unprotected SonicWall Secure Mobile Access (SMA) 100 devices in order to install Tiny SHell and maintain control over the systems for an extended period.
