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HighVulnerabilities· Published May 28, 2026

Unpatched VPN and Firewall Appliances Exploited in the Wild

Threat actors continue exploiting known vulnerabilities in edge devices — VPN concentrators, firewalls, and remote-access gateways — to gain initial network access without triggering antivirus alerts.

Who is affected

Businesses with remote workers, multi-site offices, or legacy VPN appliances that have not been patched on a regular cadence.

Why it matters

Your firewall is the front door. An unpatched VPN is often the easiest way attackers enter a Florida SMB network undetected.

Recommended actions

  • Inventory all edge devices and confirm firmware is on the latest stable release.
  • Disable unused VPN accounts and enforce MFA on all remote access.
  • Replace end-of-life hardware that no longer receives security updates.
  • Monitor firewall logs for unusual outbound connections.

Official reference

CISA Known Exploited Vulnerabilities Catalog

Need help implementing these protections?

ITNS provides managed IT, cybersecurity, and compliance support across Florida. Tell us about your environment — we will help you prioritize what matters most for your team.

Disclaimer: This advisory is for general awareness only and does not constitute legal or compliance advice. Every environment is different — contact ITNS for guidance specific to your business.