Detections
Analytics

CVE-2026-8452

high

Description

Memory overflow vulnerability NetScaler ADC and NetScaler Gateway leading to unpredictable or erroneous behavior and Denial of Service if the appliance is configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) or AAA virtual server

References

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

https://securityaffairs.com/197975/hacking/u-s-cisa-adds-red-hat-linux-kernel-ajax-net-professional-microsoft-sql-server-and-citrix-netscaler-flaws-to-its-known-exploited-vulnerabilities-catalog.html

https://www.infosecurity-magazine.com/news/cisa-kev-microsoft-citrix/

https://www.bleepingcomputer.com/news/security/cisa-hackers-now-exploiting-citrix-netscaler-rce-flaw-in-attacks/

https://thehackernews.com/2026/08/cisa-adds-six-exploited-flaws-to-kev.html

https://www.cisa.gov/news-events/alerts/2026/08/26/cisa-adds-six-known-exploited-vulnerabilities-catalog

https://labs.watchtowr.com/youre-back-in-the-room-citrix-netscaler-pre-auth-rce-cve-2026-8452/

https://www.securityweek.com/citrix-patches-netscaler-vulnerabilities-including-new-http-2-bomb-attack/

https://thehackernews.com/2026/07/citrix-patches-six-netscaler-flaws.html

https://github.com/techupdate24/citrix-netscaler-cve-2026-8452-rce

https://github.com/watchtowrlabs/watchTowr-vs-Citrix-Netscaler-PreAuth-RCE-CVE-2026-8452

https://github.com/derekpreston81/CVE_ADC_IOC_2026

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-8452

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-40307

Details

Source: Mitre, NVD

Published: 2026-06-30

Updated: 2026-08-27

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 8.8

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

Severity: High

EPSS

EPSS: 0.01011

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Interest