Citrix ADC and Citrix NetScaler Gateway Information Disclosure (CTX579459) (Direct Check)

high Nessus Plugin ID 186176


The remote web application is affected by an information disclosure vulnerability.


The version of Citrix ADC or Citrix NetScaler Gateway SSL VPN running on the remote web server is affected by an information disclosure vulnerability. An unathenticated, remote attacker can send a request to the device, causing a buffer overflow and revealing secrets, including session tokens, from the application memory.

Please refer to advisory CTX579459 for more information.


Refer to vendor documentation for security updates.

See Also

Plugin Details

Severity: High

ID: 186176

File Name: citrix_CTX579459_direct_check.nbin

Version: 1.5

Type: remote

Family: CGI abuses

Published: 11/22/2023

Updated: 2/21/2024

Configuration: Enable thorough checks

Supported Sensors: Nessus

Risk Information


Risk Factor: High

Score: 7.1


Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2023-4966


Risk Factor: High

Base Score: 7.5

Temporal Score: 7.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:citrix:netscaler_access_gateway_firmware

Required KB Items: www/netscaler

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/10/2023

Vulnerability Publication Date: 10/10/2023

CISA Known Exploited Vulnerability Due Dates: 11/8/2023

Reference Information

CVE: CVE-2023-4966

IAVA: 2023-A-0536-S