CVE-2026-19490Critical· 9.8▾ Hadal⚠ Exploited in the wildPoC availableVulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.
▾ Hadal zone — Critical and actively exploited (CISA KEV / 0day)
impact 53.9 · likelihood 6.5 · exploitation 25
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Sep 9.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Federal remediation due Sep 12, 2026
3.4%
9.3 → 9.8
Last analysed / modified upstream
3.4% → 33%
3 GitHub repos (last check)
Added to the CISA catalog on Sep 9, 2026. Federal remediation due Sep 12, 2026. View catalog ↗
Vulnerability in NetScaler ADC and NetScaler Gateway.
This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.
netscaler_application_delivery_controller >= 13.1, < 13.1-37.277netscaler_application_delivery_controller >= 13.1, < 13.1-63.21netscaler_application_delivery_controller >= 14.1, < 14.1-73.32netscaler_application_delivery_controller >= 14.1-66.68, <= 14.1-73.32netscaler_gateway >= 13.1, < 13.1-63.21netscaler_gateway >= 14.1, < 14.1-73.32Upgrade past the affected range:
netscaler_application_delivery_controller 14.1-73.32netscaler_gateway 14.1-73.32Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-88779High· 7.5Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: before 14.1-73.41, before 13.1-64.28, before 14.1-73.41 FIPS, and before 13.1-37.282; Gateway: before 14.1-73.41 and before 13.1-64.28.
CVE-2026-88771Critical· 9.8Improper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 1…
CVE-2026-88772High· 8.1Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-…
CVE-2025-5777High· 7.5Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server
CVE-2023-3519Critical· 9.8Unauthenticated remote code execution
CVE-2023-4966Critical· 9.4Sensitive information disclosure in NetScaler ADC and NetScaler Gateway when configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server.