Buffer overflow in Citrix Netscaler_application_delivery_controller
CVE-2025-7775
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 …
Vulnerability class: Buffer Overflow
EPSS: 0.190 (97.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Citrix Netscaler_application_delivery_controller
- Citrix Netscaler_gateway
- Netscaler Adc — versions 14.1, 13.1, 13.1 FIPS and NDcPP
- Netscaler Gateway — versions 14.1, 13.1, 13.1 FIPS and NDcPP
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- secure@citrix.com (Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2025-7775?
- CVE-2025-7775 is a critical-severity vulnerability in Citrix Netscaler_application_delivery_controller, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2025-08-26.
- How severe is CVE-2025-7775?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2025-7775 known to be exploited?
- Yes. CVE-2025-7775 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-08-26), indicating it is being actively exploited. 18 public proof-of-concept repositories are indexed.