Detections
Analytics

CVE-2026-88774

high

Description

Vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-64.23, before 14.1-73.37 FIPS, and before 13.1.37.279 FIPS and NDcPP; Gateway: before 14.1-73.37 and before 13.1-64.23 leading to a feature policy bypass due to improper HTTP URL based expression usage.

References

https://www.hipaajournal.com/citrix-zero-day-vulnerabilities-exploited-sept-2026/

https://labs.watchtowr.com/here-we-go-again-citrix-netscaler-dtls-preauth-memory-overflow-cve-2026-88772/

https://www.infosecurity-magazine.com/news/citrix-patches-critical-zero-days/

https://labs.watchtowr.com/oh-look-the-foot-gun-went-off-again-citrix-netscaler-preauth-command-injection-cve-2026-88771/

https://www.cisa.gov/news-events/alerts/2026/09/27/critical-zero-day-vulnerabilities-exploited-citrix-netscaler-adc-gateway

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX697096&articleTitle=Citrix_NetScaler_ADC_and_Citrix_NetScaler_Gateway_Security_Bulletin_for_CVE_2026_88771_CVE_2026_88772_CVE_2026_88773_CVE_2026_88774_CVE_2026_88775_CVE_2026_88776_CVE_2026_88777_and_CVE_2026_88778

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-87960

Details

Source: Mitre, NVD

Published: 2026-09-27

Updated: 2026-09-29

Risk Information

CVSS v2

Base Score: 6.4

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

Severity: Medium

CVSS v3

Base Score: 7.2

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

Severity: High

CVSS v4

Base Score: 7

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

Severity: High

EPSS

EPSS: 0.00241