CVE-2026-8452
Memory overflow vulnerability leading to unpredictable or erroneous behavior and Denial of Service
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
INFO
Published Date :
June 30, 2026, 1:19 p.m.
Last Modified :
July 1, 2026, 3:52 p.m.
Remotely Exploit :
Yes !
Source :
50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
Affected Products
The following products are affected by CVE-2026-8452
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | HIGH | 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 | ||||
| CVSS 4.0 | HIGH | 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5 |
Solution
- Apply relevant security updates from the vendor.
- Review and restrict access to Gateway/AAA configurations.
- Monitor appliance behavior for anomalies.
- Consider disabling specific Gateway features if vulnerable.
Public PoC/Exploit Available at Github
CVE-2026-8452 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2026-8452.
| URL | Resource |
|---|---|
| https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8452 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-2026-8452
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).
Citrix NetScaler CVE Preconditions Checker as per CTX696604 | Supported CVE : CVE-2026-8451, CVE-2026-8452, CVE-2026-8655, CVE-2026-10816, CVE-2026-10817, and CVE-2026-13474
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8452 vulnerability anywhere in the article.
-
TheCyberThrone
Citrix Fixes 6 Vulnerabilities in NetScaler
July 3, 2026Citrix has released security updates for its widely deployed NetScaler ADC and NetScaler Gateway, patching six vulnerabilities that could expose organizations to arbitrary file reads, memo ... Read more
-
The Hacker News
Citrix Patches Six NetScaler Flaws Allowing File Read and Denial-of-Service
Citrix on Tuesday released security updates to address multiple flaws in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway) that could be exploited by an attacker to f ... Read more
The following table lists the changes that have been made to the
CVE-2026-8452 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.
-
Initial Analysis by [email protected]
Jul. 01, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* versions from (including) 13.1 up to (excluding) 13.1-63.18 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* versions from (including) 14.1 up to (excluding) 14.1-72.61 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* versions up to (excluding) 13.1-37.272 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* versions up to (excluding) 13.1-37.272 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:14.1-66.68:*:*:*:fips:*:*:* *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 13.1 up to (excluding) 13.1-63.18 *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 14.1 up to (excluding) 14.1-72.61 Added Reference Type NetScaler: https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 30, 2026
Action Type Old Value New Value Added CWE CWE-119 Added SSVC {'id': 'CVE-2026-8452', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-30T13:36:43.132060Z'} -
New CVE Received by 50a63c94-1ea7-4568-8c11-eb79e7c5a2b5
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'NetScaler', 'product': 'ADC', 'versions': [{'status': 'affected', 'version': '14.1', 'lessThan': '72.61', 'versionType': 'patch'}, {'status': 'affected', 'version': '13.1', 'lessThan': '63.18', 'versionType': 'patch'}, {'status': 'affected', 'version': '14.1 FIPS', 'lessThan': '72.61', 'versionType': 'patch'}, {'status': 'affected', 'version': '13.1 FIPS and NDcPP', 'lessThan': '37.272', 'versionType': 'patch'}], 'defaultStatus': 'unaffected'}, {'vendor': 'NetScaler', 'product': 'Gateway', 'versions': [{'status': 'affected', 'version': '14.1', 'lessThan': '72.61', 'versionType': 'patch'}, {'status': 'affected', 'version': '13.1', 'lessThan': '63.18', 'versionType': 'patch'}], 'defaultStatus': 'unaffected'}] Added 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 Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/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 Added Reference https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX696604