CVE-2025-6543

Memory overflow vulnerability leading to unintended control flow and Denial of Service in NetScaler ADC and NetScaler Gateway when configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server

CVSS v3.0 9.8 CRITICAL

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:citrix:netscaler_application_delivery_controller:::::-:::*
	cpe:2.3:a:citrix:netscaler_application_delivery_controller:::::fips:::*
	cpe:2.3:a:citrix:netscaler_application_delivery_controller:::::-:::*
	cpe:2.3:a:citrix:netscaler_application_delivery_controller:::::ndcpp:::*

Configuration 2 (hide)

OR	cpe:2.3:a:citrix:netscaler_gateway::::::::
	cpe:2.3:a:citrix:netscaler_gateway::::::::

History

01 Jul 2025, 18:19

Type	Values Removed	Values Added
References	~~() https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788 -~~	() https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788 - Vendor Advisory
First Time		Citrix netscaler Gateway Citrix Citrix netscaler Application Delivery Controller
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8
CPE		cpe:2.3:a:citrix:netscaler_application_delivery_controller:::::fips:::* cpe:2.3:a:citrix:netscaler_application_delivery_controller:::::ndcpp:::* cpe:2.3:a:citrix:netscaler_gateway:::::::: cpe:2.3:a:citrix:netscaler_application_delivery_controller:::::-:::*

25 Jun 2025, 13:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-25 13:15

Updated : 2025-07-01 18:19

NVD link : CVE-2025-6543

Mitre link : CVE-2025-6543

JSON object : View

Products Affected

citrix

netscaler_application_delivery_controller
netscaler_gateway

CWE

No CWE.

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