CVE-2025-5777

NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread

Published Jun 17, 2025 CVSS 4.0 · 9.3 Critical EPSS 99.9% KEV · Listed
Description
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

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-457
Type Values Removed Values Added
Metrics epss

{'score': 0.05815}

epss

{'score': 0.05119}

Type Values Removed Values Added
Metrics epss

{'score': 0.16566}

epss

{'score': 0.05815}

Type Values Removed Values Added
Metrics epss

{'score': 0.49701}

epss

{'score': 0.16566}

Type Values Removed Values Added
Metrics epss

{'score': 0.02912}

epss

{'score': 0.49701}

Type Values Removed Values Added
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Citrix
Citrix netscaler Application Delivery Controller
Citrix netscaler Gateway
Weaknesses CWE-908
CPEs cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:*
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:*
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*
Vendors & Products Citrix
Citrix netscaler Application Delivery Controller
Citrix netscaler Gateway
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Type Values Removed Values Added
Weaknesses CWE-457
References
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Insufficient input validation leading to memory overread on the NetScaler Management Interface NetScaler ADC and NetScaler Gateway 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
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Insufficient input validation leading to memory overread on the NetScaler Management Interface NetScaler ADC and NetScaler Gateway
Title NetScaler ADC and NetScaler Gateway - Insufficient input validation leading to memory overread
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Citrix
Published
Updated
Oct 7, 2026, 5:58 PM
Reserved
Jun 6, 2025, 6:14 AM
Status
Analyzed
Published
Jun 17, 2025, 1:15 PM
Modified
Oct 8, 2026, 10:35 AM