VULNERABILITY INTELLIGENCE

CVE-2025-6543

CVSS score9.8 CRITICAL
EPSS probability10.43%
CISA KEVKnown exploited vulnerability
Published2025-06-25
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Known Exploited Vulnerability

Citrix NetScaler ADC and Gateway Buffer Overflow Vulnerability

Vendor / product: Citrix / NetScaler ADC and Gateway

Description

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

Weakness classification

  • secure@citrix.com: CWE-119

Primary references