The Citrix ICA (Independent Computing Architecture) protocol uses weak encryption (XOR) for user authentication.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2000-0243
http://www.securityfocus.com/templates/archive.pike?list=1&msg=Pine.BSO.4.20.0003290949280.2640-100000%40naughty.monkey.org
http://www.securityfocus.com/bid/1077
Source: Mitre, NVD
Published: 2000-03-29
Updated: 2026-06-16
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 7.5
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High
EPSS: 0.02326