CVE-2025-7776

Description

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 Profile bounded to it

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-119 Buffer Overflow

Affected Products

Vendor	Product	Versions
citrix	netscaler_application_delivery_controller	12.1 — 12.1-55.330
citrix	netscaler_application_delivery_controller	12.1 — 12.1-55.330
citrix	netscaler_application_delivery_controller	13.1 — 13.1-37.241
citrix	netscaler_application_delivery_controller	13.1 — 13.1-37.241
citrix	netscaler_application_delivery_controller	13.1 — 13.1-59.22
citrix	netscaler_application_delivery_controller	14.1 — 14.1-47.48
citrix	netscaler_gateway	13.1 — 13.1-59.22
citrix	netscaler_gateway	14.1 — 14.1-47.48

References

Advisories & Patches

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694938

Frequently Asked Questions

What is 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 Profile bounded to it It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-7776? +

CVE-2025-7776 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-7776? +

CVE-2025-7776 affects products from citrix, specifically: netscaler_application_delivery_controller, netscaler_gateway. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-7776? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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