SonicWall has released a firmware update that can help customers remove rootkit malware deployed in attacks targeting SMA 100 series devices. "SonicWall SMA 100 10.2.2.2-92sv build has been released with additional file checking, providing the capability to remove known rootkit malware present on the SMA devices," the company said in a Monday advisory. "SonicWall strongly recommends that users of the SMA 100 series products (SMA 210, 410, and 500v) upgrade to the 10.2.2.2-92sv version." "The threat intelligence report from Google Threat Intelligence Group (GTIG) highlights potential risk of using older versions of SMA100 firmware," SonicWall added on Monday, urging admins to implement the security measures outlined in this July advisory. The Australian Cyber Security Center (ACSC) and cybersecurity firm Rapid7 later confirmed that the Akira gang is exploiting this vulnerability to target unpatched SonicWall devices.