CVE-2025-7775
CriticalExploitedPublic exploitMemory 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
Published Sep 9, 2025 · Updated Feb 26, 2026 · Also known as TR-25-0218
Key Facts
Patch immediately- CVE-2025-7775 is a critical-severity vulnerability (CVSS 9.2 v4) affecting Netscaler Application Delivery Controller (Citrix), Netscaler Gateway (Citrix).
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 26, 2025. Public exploit code is available.
- EPSS estimates a 20% probability of exploitation in the next 30 days.
- Fixed versions are available, including Netscaler Application Delivery Controller 37.241, Netscaler Application Delivery Controller 47.48, Netscaler Application Delivery Controller 55.330.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v4
9.2
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (30-day exploit likelihood)
20%
Higher than 97.4% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2025-7775 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 26, 2025 | Aug 28, 2025 | Not reported |
| Industry KEV feed | Aug 26, 2025 | Aug 28, 2025 | Not reported |
| CIRCL KEV | Aug 26, 2025 | Aug 28, 2025 | Not reported |
| ENISA EUVD | Aug 26, 2025 | n/a | Not reported |
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.
Affected Products
6 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Netscaler Application Delivery ControllerCitrix | >= 14.1 | 13.1-59.22 |
| Netscaler GatewayCitrix | >= 14.1 | 13.1-59.22 |
Patched Releases
Netscaler Application Delivery Controller
37.241, 47.48, 55.330, 59.22, 12.1-55.330, 13.1-59.22
Netscaler Gateway
13.1-59.22, 37.241, 47.48, 55.330, 59.22
Timeline
Added to CISA KEV
Aug 26, 2025
Added to Industry KEV feed
Aug 26, 2025
Added to CIRCL KEV
Aug 26, 2025
Added to ENISA EUVD
Aug 26, 2025
Publicly disclosed
Sep 9, 2025
Last updated
Feb 26, 2026
Weakness Type
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-7775
- advisoryhttps://nvd.nist.gov/vuln/detail/CVE-2025-7776
- advisoryhttps://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938
- advisoryUSOM advisory
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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 vi…
Affected: Netscaler Application Delivery Controller (Citrix) versions >= 14.1; Netscaler Gateway (Citrix) versions >= 14.1. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Aug 26, 2025.
Yes. It was added on Aug 26, 2025 with a federal remediation due date of Aug 28, 2025.
Public exploit code is available.
Fixed versions are available, including Netscaler Application Delivery Controller 37.241, Netscaler Application Delivery Controller 47.48, Netscaler Application Delivery Controller 55.330.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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