CVE-2025-7776NVD

Vulnerability Summary

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

Severity Level

HIGH(8.8)

Published Date

Aug 26, 2025

Last Modified

Sep 3, 2025

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

CWE-119: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 8.8 (HIGH)

Attack VectorNetwork

Attack ComplexityLow

Attack RequirementsNone

Privileges RequiredNone

User InteractionNone

Confidentiality (Vulnerable System)Low

Integrity (Vulnerable System)Low

Availability (Vulnerable System)High

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)Low

CVSS v3.1 Base Metrics — Score 9.8 (CRITICAL)

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

Affected & Patched Versions

Affected Versions

Citrix Netscaler Application Delivery Controller >= 12.1 and < 12.1-55.330
Citrix Netscaler Application Delivery Controller >= 13.1 and < 13.1-37.241
Citrix Netscaler Application Delivery Controller >= 13.1 and < 13.1-59.22
Citrix Netscaler Application Delivery Controller >= 14.1 and < 14.1-47.48
Citrix Netscaler Gateway >= 13.1 and < 13.1-59.22
Citrix Netscaler Gateway >= 14.1 and < 14.1-47.48

Patched Versions

Citrix Netscaler Application Delivery Controller 12.1-55.330
Citrix Netscaler Application Delivery Controller 13.1-37.241
Citrix Netscaler Application Delivery Controller 13.1-59.22
Citrix Netscaler Application Delivery Controller 14.1-47.48
Citrix Netscaler Gateway 13.1-59.22
Citrix Netscaler Gateway 14.1-47.48

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