CVE-2026-19489
NetScaler ADC and NetScaler Gateway Information Disclosure Vulnerability
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.
INFO
Published Date :
Aug. 19, 2026, 1:17 p.m.
Last Modified :
Sept. 1, 2026, 9:03 p.m.
Remotely Exploit :
Yes !
Source :
50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
Affected Products
The following products are affected by CVE-2026-19489
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 | ||||
| CVSS 4.0 | HIGH | 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 |
Solution
- Update NetScaler ADC to a version later than 14.1.73.32.
- Update NetScaler ADC to a version later than 13.1.63.21.
- Update NetScaler Gateway to a version later than 14.1.73.32.
- Update NetScaler Gateway to a version later than 13.1.63.21.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-19489.
| URL | Resource |
|---|---|
| https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696939 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-19489 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-19489
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-19489 vulnerability anywhere in the article.
-
The Cyber Express
The Cyber Express Weekly Roundup: Claude Session Hijacking, PaperCut Exploits, and Enterprise Cyberattacks
This weekly roundup highlights a range of cybersecurity developments affecting artificial intelligence platforms, enterprise software, healthcare organizations, social media accounts, and internet-fac ... Read more
-
The Cyber Express
Two Citrix NetScaler Flaws Put Enterprise Edge Devices at Risk
Two Citrix NetScaler vulnerabilities affecting Citrix NetScaler Application Delivery Controller (ADC) and Citrix NetScaler Gateway products have prompted a patching warning for Australian organisation ... Read more
-
TheCyberThrone
Critical NetScaler Security Update Patching Two Vulnerabilities
Cloud Software Group has released security updates for NetScaler ADC and NetScaler Gateway addressing two vulnerabilities, including a critical authentication-bypass flaw rated CVSS 9.3.The more serio ... Read more
-
The Hacker News
Critical NetScaler Flaw Can Bypass Authentication on Certain Gateway and AAA Servers
Citrix has released updates to address two security flaws impacting NetScaler ADC and NetScaler Gateway deployments, including a critical-severity authentication bypass vulnerability. According to the ... Read more
The following table lists the changes that have been made to the
CVE-2026-19489 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 20, 2026
Action Type Old Value New Value Added CWE CWE-120 Added SSVC {'id': 'CVE-2026-19489', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-20T13:36:23.963103Z'} -
New CVE Received by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
Aug. 19, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'NetScaler', 'product': 'ADC', 'versions': [{'status': 'affected', 'version': '14.1', 'versionType': 'patch', 'lessThanOrEqual': '73.32'}, {'status': 'affected', 'version': '13.1', 'versionType': 'patch', 'lessThanOrEqual': '63.21'}], 'defaultStatus': 'unaffected'}, {'vendor': 'NetScaler', 'product': 'Gateway', 'versions': [{'status': 'affected', 'version': '14.1', 'versionType': 'patch', 'lessThanOrEqual': '73.32'}, {'status': 'affected', 'version': '13.1', 'versionType': 'patch', 'lessThanOrEqual': '63.21'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/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 Added Reference https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696939