Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-5777

Severity CVSS v4.0:
CRITICAL
Type:
CWE-125 Out-of-bounds Read
Publication date:
17/06/2025
Last modified:
12/07/2025

Description

Insufficient input validation leading to memory overread when the NetScaler is configured as a Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server

Impact

Vector 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L CVSS v4.0 Severity and Metrics:

Base Score: 9.30 CRITICAL
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): Low
Integrity (SI): Low
Availability (SA): Low

Base Score 4.0
9.30
Severity 4.0
CRITICAL
Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* 12.1 (including) 12.1-55.328 (excluding)
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* 13.1 (including) 13.1-37.235 (excluding)
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* 13.1 (including) 13.1-37.235 (excluding)
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* 13.1 (including) 13.1-58.32 (excluding)
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* 14.1 (including) 14.1-43.56 (excluding)
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* 13.1 (including) 13.1-58.32 (excluding)
cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* 14.1 (including) 14.1-43.56 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools