{"cve":"CVE-2025-6543","nvd":{"published":"2025-06-25T13:15:27.293","modified":"2026-06-17T10:02:07.007","status":"Analyzed","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","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L","score":9.2},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-119"],"references":["https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-6543"],"products":["citrix:netscaler_application_delivery_controller","citrix:netscaler_gateway"],"source":"nvd","synced_at":"2026-10-19T22:03:23.287444849+00:00"},"epss":{"cve":"CVE-2025-6543","score":0.10433,"percentile":0.95738,"date":"2026-10-31"},"kev":{"cve":"CVE-2025-6543","date_added":"2025-06-30","due_date":"2025-07-21","vendor":"Citrix","product":"NetScaler ADC and Gateway","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}