11 October 2026
1. What is being reported?
Citrix has identified a serious security weakness in its NetScaler product that allows remote code execution. This means attackers could run harmful commands on your system without permission if the vulnerability is not fixed.
2. What this means in plain English
If your organisation uses Citrix NetScaler to allow remote access to your network or applications, this flaw could let attackers break in and take control. This could lead to data theft, disruption, or other damage.
3. Could this affect a small business?
Small businesses and charities using Citrix NetScaler for remote access are at risk. If you do not use this product, or do not provide remote access through it, you are likely not affected.
4. What to do now
- Check if your organisation uses Citrix NetScaler for remote access.
- Contact your IT provider or software supplier immediately to confirm if patches are available.
- Apply the recommended security updates from Citrix as soon as possible.
- Review remote access policies and monitor for unusual activity during this time.
5. Ask your IT provider
Can you confirm if our Citrix NetScaler systems are affected by the recent remote code execution vulnerability, and have patches been applied?
6. Bottom line
If you use Citrix NetScaler, act quickly to patch this critical vulnerability to keep your organisation safe.
Information based on reputable security reporting and CISA KEV advisories.