Ref# ADV2025_181 | Date: Jul 3rd 2025

---

Citrix has published a security advisory highlighting vulnerabilities in the following product on July 2nd, 2025. It is recommended that you take the necessary precautions by ensuring your products are always updated. 

• XenServer 8.4 

For more information on this update, you can follow these URLs: 

• Citrix Security Advisory – CTX694780 

• Citrix Security Advisories 

The Guyana National CIRT recommends that users and administrators review this update and apply it where necessary. 

PDF Download: Citrix Security Advisory

References 

• Citrix Security Advisories. (July 2nd, 2025). Retrieved from Citrix. https://support.citrix.com/knowledge-center#/?ct=Security%20Bulletins&searchText=&sortBy=Created%20date&pageIndex=1  

• Citrix Security Advisory. (July 2nd, 2025). Retrieved from Canadian Centre for Cyber Security. https://www.cyber.gc.ca/en/alerts-advisories/citrix-security-advisory-av25-387