CVE-2025-7775
Memory overflow vulnerability leading to Remote Code Execution and/or Denial of Service
Citrix NetScaler Memory Overflow Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA notes
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938 ; https://nvd.nist.gov/vuln/detail/CVE-2025-7775
Description
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
Severity
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:LAffected Products
| Vendor | Product | Affected versions |
|---|---|---|
| NetScaler | ADC | 14.1 to <47.48 13.1 to <59.22 13.1 FIPS and NDcPP to <37.241 12.1 FIPS and NDcPP to <55.330 |
| NetScaler | Gateway | 14.1 to <47.48 13.1 to <59.22 13.1 FIPS and NDcPP to <37.241 12.1 FIPS and NDcPP to <55.330 |
References
1 LinksRecord Details
More from NetScaler
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NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2026-19490
Insufficient input validation leading to memory overread
Related Tool Categories
Tool categories that test for or protect against this vulnerability class.
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