CVE-2023-3519Critical· 9.8▾ Hadal⚠ Exploited in the wild0dayPoC availableUnauthenticated remote code execution
▾ Hadal zone — Critical and actively exploited (CISA KEV / 0day)
impact 53.9 · likelihood 19.9 · 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.
Exploit-prediction probability, daily snapshots since Aug 5.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Federal remediation due Aug 9, 2023
Last analysed / modified upstream
100%
100% → 100%
13 GitHub repos · Metasploit ×1 · Nuclei ×1
Added to the CISA catalog on Jul 19, 2023. Federal remediation due Aug 9, 2023. View catalog ↗
Unauthenticated remote code execution
netscaler_application_delivery_controller >= 12.1, < 12.1-55.297netscaler_application_delivery_controller >= 13.0, < 13.0-91.13netscaler_application_delivery_controller >= 13.1, < 13.1-37.159netscaler_application_delivery_controller >= 13.1, < 13.1-49.13netscaler_gateway >= 13.0, < 13.0-91.13netscaler_gateway >= 13.1, < 13.1-49.13Upgrade past the affected range:
netscaler_application_delivery_controller 13.1-49.13netscaler_gateway 13.1-49.13Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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-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-2023-4966Critical· 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.
CVE-2021-44529Critical· 9.8A code injection vulnerability in the Ivanti EPM Cloud Services Appliance (CSA) allows an unauthenticated user to execute arbitrary code with limited permissions (nobody).
CVE-2021-22205Critical· 10.0An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.9
CVE-2019-19781Critical· 9.8An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0