SonicWall has issued an “urgent security notice” warning customers of ransomware attacks targeting unpatched end-of-life (EoL) Secure Mobile Access (SMA) 100 series and Secure Remote Access (SRA) products.

“Through the course of collaboration with trusted third parties, SonicWall has been made aware of threat actors actively targeting Secure Mobile Access (SMA) 100 series and Secure Remote Access (SRA) products running unpatched and end-of-life (EOL) 8.x firmware in an imminent ransomware campaign using stolen credentials,” the company said.

According to SonicWall, the attacks target a known vulnerability patched in newer versions of firmware, and they do not impact SMA 1000 series products.

“Organizations that fail to take appropriate actions to mitigate these vulnerabilities on their SRA and SMA 100 series products are at imminent risk of a targeted ransomware attack,” SonicWall warns.

Organizations using the following end-of-life SMA and/or SRA devices running firmware 8.x should either update their firmware or disconnect their appliances per guidance below.

  • SRA 4600/1600 (EOL 2019)
    • Disconnect immediately 
    • Reset passwords
  • SRA 4200/1200 (EOL 2016)
    • Disconnect immediately
    • Reset passwords
  • SSL-VPN 200/2000/400 (EOL 2013/2014)
    • Disconnect immediately 
    • Reset passwords
  • SMA 400/200 (Still Supported, in Limited Retirement Mode)
    • Update to 10.2.0.7-34 or 9.0.0.10 immediately
    • Reset passwords
    • Enable MFA

While not part of this campaign targeting SRA/SMA firmware 8.x, customers with the following products should also ensure that they’re on the latest version of firmware to mitigate vulnerabilities discovered in early 2021.

  • SMA 210/410/500v (Actively Supported)
    • Firmware 9.x should immediately update to 9.0.0.10-28sv or later
    • Firmware 10.x should immediately update to 10.2.0.7-34sv or later