CVE-2025-6543
Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability
CVSS
—
Sin CVSS
EPSS
10.1%
p95
KEV
SÍ
30 jun 2025
Exploit Today
79
0-100
Publicado: — · Última mod.: —
Producto
Citrix / NetScaler ADC and Gateway
Vulnerabilidad
Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability
Añadido a KEV
30 jun 2025
Remediar antes de
21 jul 2025
Uso conocido en ransomware
No
Descripción resumida
Citrix NetScaler ADC and Gateway contain a buffer overflow vulnerability leading to unintended control flow and Denial of Service. NetScaler must be configured as Gateway (VPN virtual server, ICA Proxy, CVPN, RDP Proxy) OR AAA virtual server.
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.
Notas
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