CVE-2026-19490

Name: CVE-2026-19490
Creator: NVD / NIST
Published: 2026-08-19T13:17:45+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 32.65%

Last modified Oct 26, 2026

CVE-2026-19490 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.. CISA has confirmed active exploitation in the wild. EPSS estimates a 32.65% chance of exploitation in the next 30 days.

Description

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

9.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

32.65%

98.3th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Sep 12, 2026.

Weakness Enumeration

CWE-288

Affected Software

Vendor	Product	Versions
Citrix	Netscaler Application Delivery Controller	>= 13.1, < 13.1-37.277
Citrix	Netscaler Application Delivery Controller	>= 13.1, < 13.1-63.21
Citrix	Netscaler Application Delivery Controller	>= 14.1, < 14.1-73.32
Citrix	Netscaler Application Delivery Controller	>= 14.1-66.68, <= 14.1-73.32
Citrix	Netscaler Gateway	>= 13.1, < 13.1-63.21
Citrix	Netscaler Gateway	>= 14.1, < 14.1-73.32

References

https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696939Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-19490US Government Resource

Timeline

Published: Aug 19, 2026
Last Modified: Oct 26, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-19490?

Vulnerability in NetScaler ADC and NetScaler Gateway. This issue affects ADC: from 14.1 through 73.32 and from 13.1 through 63.21; Gateway: from 14.1 through 73.32 and from 13.1 through 63.21.

How severe is CVE-2026-19490?

CVE-2026-19490 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 32.65% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2026-19490?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST