PatchTheCVEnetscaler application delivery controller vulnerabilities and fixes
Recent CVEs affecting netscaler application delivery controller, with upgrade or downgrade steps. 5 tracked.
netscaler application delivery controller has 5 tracked vulnerabilities, 3 critical and 5 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 5. Most recent: 2026-10-04. Highest priority: CVE-2026-88771 (score 98/100).
- CVE-2026-19490 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE Citrix NetScaler Authentication Bypass Using an Alternate Path or Channel Vulnerability
- CVE-2026-88779 HIGH 7.5 EXPLOITED UPGRADE UPGRADE Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
- CVE-2026-88771 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE Citrix NetScaler Improper Input Validation Vulnerability
- CVE-2026-88772 HIGH 8.1 EXPLOITED UPGRADE UPGRADE Citrix NetScaler Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
- CVE-2026-8452 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE Citrix NetScaler ADC and NetScaler Gateway Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability
FAQ
How do I fix netscaler application delivery controller vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is netscaler application delivery controller being exploited right now?
Yes: 5 netscaler application delivery controller CVEs are on the CISA Known Exploited Vulnerabilities list, so patch those first.
Which netscaler application delivery controller CVE should I patch first?
CVE-2026-88771 currently ranks highest (98/100): Citrix NetScaler Improper Input Validation Vulnerability.