Networking machine maker SonicWall said on Friday night time that it is investigating a security breach of its inner network after detecting what it described as a “coordinated assault.”

In a short statement posted on its knowledgebase portal, the firm claimed that “hugely refined menace actors” targeted its internal techniques by “exploiting possible zero-day vulnerabilities on certain SonicWall safe distant entry products.”

The company listed NetExtender VPN clientele and the Protected Cell Entry (SMA) gateways as impacted:

  • NetExtender VPN customer version 10.x (launched in 2020) utilized to join to SMA 100 series appliances and SonicWall firewalls.
  • Protected Cell Obtain (SMA) version 10.x working on SMA 200, SMA 210, SMA 400, SMA 410 physical appliances, and the SMA 500v virtual equipment.

SonicWall stated that the more recent SMA 1000 sequence is not impacted as it really is applying a various VPN client than NetExtender.

Patches for the zero-working day vulnerabilities are not offered at the time of crafting.

The enterprise encouraged a collection of mitigations in its knowledgebase post, this sort of as deploying a firewall to limit who can interact with SMA equipment or disabling obtain via the NetExtender VPN client to its firewalls.

SonicWall also urged corporations to empower two-element authentication possibilities in its solutions for admin accounts.

The networking unit maker, whose merchandise are generally made use of to protected obtain to corporate networks, now gets the fourth protection seller to disclose a stability breach over the previous two months after FireEye, Microsoft, and Malwarebytes.

All 3 businesses had been breached through the SolarWinds source chain attack. CrowdStrike said it was qualified in the SolarWinds hack as well, but the assault did not triumph.

Cisco, a further key vendor of networking and security units, was also specific by the SolarWinds hackers. The enterprise explained final month it was investigating if attackers escalated their first accessibility from the SolarWinds merchandise to other pieces of its community.