Outsource IT Computing Inc. logo
CriticalCloud and identityOct 9, 2026

Critical Security Flaw Discovered in Citrix NetScaler Gateways

Citrix has issued critical security updates to address a severe memory overflow flaw impacting NetScaler ADC and NetScaler Gateway appliances. Under specific SAML authentication configurations, attackers can exploit this weakness to execute unauthorized code remotely or shut down systems. Canadian businesses using these gateways for remote access face potential network compromise if the updates are not applied.

Cloud and identity security briefing

Who is affected

Organizations running Citrix NetScaler ADC or NetScaler Gateway in environments utilizing SAML configurations.

How to mitigate it

  1. 1Apply the latest official security patches released by Citrix for NetScaler ADC and Gateway immediately.
  2. 2Verify your current NetScaler deployment settings to confirm if SAML features are configured and active.
  3. 3Restrict access to gateway administrative interfaces so they cannot be reached from the public internet.

How Outsource IT solves this

Outsource IT handles continuous patch management and infrastructure oversight to deploy critical security fixes before network appliances can be exploited.

Managed IT Services

Tags

CitrixNetScalerPatch ManagementNetwork Security

Source advisory: the-hacker-news

Not sure whether this affects your business?

Outsource IT has been delivering managed services for over 20 years from Burlington, Ontario, supporting organizations right across Canada. Ask our team to review your exposure.

Talk to a security specialistRun the free IT health check

More security briefings

View the full security feed

Testimonials

Don't just take our word for it.

  • We were introduced to Outsource IT at a time when we were interested in improving our IT infrastructure and associated services. In working with Outsource IT; they have rebuilt our confidence in third party IT administration. As CBM grows, we know we are in good hands as we focus on serving our clients.
    Canadian Business MachinesFull service designer and precision metal fabricator.
  • Over the past 8 years, we have received exceptional service from Outsource IT. Their attention to our needs has been prompt and thorough and we are pleased to have them as our ongoing IT service provider.
    Hamilton Family Health TeamOntario's largest Family Health Team with over 150 doctors
  • Outsource IT has brought critical thinking, support and value to our Organization. Their attention to detail and strategic approach leverages I.T. operations to meet today's industry standards. Being EXCEPTIONAL is exactly what Outsource IT has brought to CICC.
    CICCCollege of Immigration and Citizenship Consultants

Technology partners we build on

Certified expertise across the platforms that run Canadian business, from Microsoft and Cisco to Fortinet, Dell and HPE.

  • Microsoft technology partner logo
  • Cisco technology partner logo
  • Fortinet technology partner logo
  • Barracuda technology partner logo
  • Dell Technologies technology partner logo
  • HP technology partner logo
  • Hewlett Packard Enterprise technology partner logo
  • Lenovo technology partner logo
  • VMware technology partner logo
  • Google technology partner logo
  • Eaton technology partner logo
  • 3CX technology partner logo