CVE-2025-5777High· 7.5▾ Abyssal⚠ Exploited in the wildPoC availableInsufficient 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
▾ Abyssal zone — Critical with a public exploit or in-the-wild use
impact 41.3 · likelihood 20 · exploitation 25 · ransomware 5
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 3 sources. 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 Aug 4.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Federal remediation due Jul 11, 2025
100%
100% → 100%
Last analysed / modified upstream
Exploit-DB · 26 GitHub repos · Nuclei ×1 (last check)
Added to the CISA catalog on Jul 10, 2025. Federal remediation due Jul 11, 2025. View catalog ↗
Insufficient 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
netscaler_application_delivery_controller >= 12.1, < 12.1-55.328netscaler_application_delivery_controller >= 13.1, < 13.1-37.235netscaler_application_delivery_controller >= 13.1, < 13.1-58.32netscaler_application_delivery_controller >= 14.1, < 14.1-43.56netscaler_gateway >= 13.1, < 13.1-58.32netscaler_gateway >= 14.1, < 14.1-43.56Upgrade past the affected range:
netscaler_application_delivery_controller 14.1-43.56netscaler_gateway 14.1-43.56Connected 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-2026-19490Critical· 9.8Vulnerability 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.
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.