CISA confirmó el 30.06.2025 que esta vulnerabilidad se usa en ataques reales. Plazo para las agencias federales de EE. UU.: 21.07.2025.
Acción requerida: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788 ; https://www.netscaler.com/blog/news/netscaler-critical-security-updates-for-cve-2025-6543-and-cve-2025-5777/ ; https://nvd.nist.gov/vuln/detail/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
Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.
| Fabricante | Producto | Versiones | |
|---|---|---|---|
| citrix | netscaler application delivery controller | 13.1 – < 13.1-37.236 | |
| citrix | netscaler gateway | 13.1 – < 13.1-59.19 | |
| NetScaler | ADC | 14.1 – < 47.46, 13.1 – < 59.19, 13.1 FIPS and NDcPP – < 37.236 | |
| NetScaler | Gateway | 14.1 – < 47.46, 13.1 – < 59.19, 13.1 FIPS and NDcPP – < 37.236 |
cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* ≥ 13.1 < 13.1-37.236cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* ≥ 13.1 < 13.1-37.236cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* ≥ 13.1 < 13.1-59.19cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* ≥ 14.1 < 14.1-47.46cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* ≥ 13.1 < 13.1-59.19cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* ≥ 14.1 < 14.1-47.46Nuestro sensor honeypot gratuito y de código abierto espera en puertos que su servidor no usa y reporta a una lista compartida los escáneres y atacantes que se conectan.