CVE-2025-7775Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service
Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with IPv6 services or servicegroups bound with IPv6 servers (OR) NetScaler ADC and NetScaler Gateway 13.1, 14.1, 13.1-FIPS and NDcPP: LB virtual servers of type (HTTP, SSL or HTTP_QUIC) bound with DBS IPv6 services or servicegroups bound with IPv6 DBS servers (OR) CR virtual server with type HDX
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.2 | CRITICAL | 4.0Citrix (CNA) | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L |
| 9.8 | CRITICAL | 3.1NVD | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CISA required action
⚡ Known exploited · remediation due Aug 28, 2025
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Details
- CVE ID
- CVE-2025-7775
- Status
- Analyzed
- Assigner (CNA)
- Citrix
- Published
- Aug 26, 2025
- Last modified
- 2026-06-17 10:05 UTC
- Weaknesses
- CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected Products
As published by the CNA in the CVE record.
NetScalerADC4 version ranges
- 14.1 before 47.48
- 13.1 before 59.22
- 13.1 FIPS and NDcPP before 37.241
- 12.1 FIPS and NDcPP before 55.330
NetScalerGateway4 version ranges
- 14.1 before 47.48
- 13.1 before 59.22
- 13.1 FIPS and NDcPP before 37.241
- 12.1 FIPS and NDcPP before 55.330