Buffer overflow in Citrix Netscaler_application_delivery_controller
CVE-2025-7776
Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service in NetScaler ADC and NetScaler Gateway when NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) with PCoIP…
Vulnerability class: Buffer Overflow
EPSS: 0.067 (93.1th 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)
Public proof-of-concept exploits
References
- secure@citrix.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-7776?
- CVE-2025-7776 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-2025-7776?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2025-7776 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.