No. CVE-2026-88779
A crafted request can knock Citrix NetScaler offline
Being used now
Yes. Attackers are using this right now.
Companies using Citrix NetScaler ADC or Gateway.
What to do
Apply Citrix's update for NetScaler.
Confirmed in attacksOct 4, 2026
ProductCitrix NetScaler
Attack likelihood, next 30 days11%
Attack likelihood is EPSS, a daily estimate from FIRST.org of how likely this bug is to be used in attacks in the next 30 days.
The official description
Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway) contain an improper restriction of operations within the bounds of a memory buffer vulnerability that could allow for a denial of service.
For your tech helper or AI assistant
A read-only checklist. Paste it into Claude, ChatGPT or a coding agent; it only looks and changes nothing.
Read-only check, change nothing, send nothing anywhere.
Is Citrix NetScaler (CVE-2026-88779) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2026-88779. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.