CVE-2026-4368

high

Description

Race Condition in NetScaler ADC and NetScaler Gateway when appliance is configured as Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server leading to User Session Mixup

References

References

https://www.itsecurityguru.org/2026/07/09/citrixbleed-2-exploited-in-repeatable-attack-chain-culminating-in-dragonforce-ransomware-researchers-find/?utm_source=rss&utm_medium=rss&utm_campaign=citrixbleed-2-exploited-in-repeatable-attack-chain-culminating-in-dragonforce-ransomware-researchers-find

https://www.huntress.com/blog/citrixbleed-2-dragonforce-ransomware

https://securityaffairs.com/190197/security/u-s-cisa-adds-a-flaw-in-citrix-netscaler-to-its-known-exploited-vulnerabilities-catalog.html

https://www.databreachtoday.com/under-fire-attackers-target-flaws-in-f5-citrix-gear-a-31289

https://www.bleepingcomputer.com/news/security/critical-citrix-netscaler-memory-flaw-actively-exploited-in-attacks/

https://www.itsecurityguru.org/2026/03/27/critical-citrix-netscaler-flaw-draws-citrixbleed-comparisons-as-exploitation-window-narrows/?utm_source=rss&utm_medium=rss&utm_campaign=critical-citrix-netscaler-flaw-draws-citrixbleed-comparisons-as-exploitation-window-narrows

https://www.hipaajournal.com/urgent-action-required-to-fix-critical-citrix-netscaler-vulnerability/

https://www.bleepingcomputer.com/news/security/citrix-urges-admins-to-patch-netscaler-flaws-as-soon-as-possible/

https://www.securityweek.com/critical-citrix-netscaler-vulnerability-poised-for-exploitation-security-firms-warn/

https://www.infosecurity-magazine.com/news/citrix-patch-netscaler/

https://www.helpnetsecurity.com/2026/03/24/netscaler-adc-gateway-cve-2026-3055/

https://thehackernews.com/2026/03/citrix-urges-patching-critical.html

https://securityaffairs.com/189908/security/citrix-netscaler-critical-flaw-could-leak-data-update-now.html

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696300

Details

Source: Mitre, NVD

Published: 2026-03-23

Updated: 2026-05-10

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 8.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 7.7

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N