CVE-2023-3519
Citrix NetScaler ADC and NetScaler Gateway Code Injection Vulnerability - [Actively Exploited]
Description
Unauthenticated remote code execution
INFO
Published Date :
July 19, 2023, 6:15 p.m.
Last Modified :
Oct. 24, 2025, 1:42 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
Citrix NetScaler ADC and NetScaler Gateway contains a code injection vulnerability that allows for unauthenticated remote code execution.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467; https://nvd.nist.gov/vuln/detail/CVE-2023-3519
Affected Products
The following products are affected by CVE-2023-3519
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 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Upgrade to version 12.1-55.297-FIPS, 13.1-37.159-FIPS, 13.0-91.13, 13.1-49.13 or later.
Public PoC/Exploit Available at Github
CVE-2023-3519 has a 49 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-2023-3519.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html | Exploit Third Party Advisory VDB Entry |
| https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467 | Vendor Advisory |
| http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html | Exploit Third Party Advisory VDB Entry |
| https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467 | Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-3519 | US Government Resource |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-3519 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-2023-3519
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).
None
Forked from https://github.com/0xor0ne/awesome-list.git
Forked from https://github.com/0xor0ne/awesome-list.git
list of cve from 2001 to 2024
Python
None
A professional SOC-style cyber threat intelligence dashboard built using React and Express.js. This project simulates real-time tracking of APT27 (aka Silk Typhoon) activities using verified IOCs, CVEs, and MITRE ATT&CK mappings.
None
None
Python Shell
None
None
This is my starred repositories including the description for each tool. Makes search/filter over them easier.
None
PowerShell C#
None
Python
Latest CVEs with their Proof of Concept exploits.
Python
None
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-3519 vulnerability anywhere in the article.
-
CrowdStrike.com
MURKY PANDA: A Trusted-Relationship Threat in the Cloud
Since late 2024, CrowdStrike Counter Adversary Operations has observed significant activity conducted by MURKY PANDA, a China-nexus adversary that has targeted government, technology, academic, legal, ... Read more
-
BleepingComputer
Murky Panda hackers exploit cloud trust to hack downstream customers
A Chinese state-sponsored hacking group known as Murky Panda (Silk Typhoon) exploits trusted relationships in cloud environments to gain initial access to the networks and data of downstream customers ... Read more
-
The Cyber Express
China-linked Silk Typhoon Hackers Target SaaS Providers, Zero Days
The China-linked advanced persistent threat (APT) group Silk Typhoon has shown a rare ability to compromise trusted relationships in the cloud. That’s one of the key takeaways from new research by Cro ... Read more
-
Help Net Security
China-linked Murky Panda targets and moves laterally through cloud services
In its recently released 2025 Threat Hunting Report, Crowdstrike pointed out an interesting trend: a 136% surge in cloud intrusions. A good chunk of this surge is due to “China-nexus adversaries”, Mur ... Read more
-
The Hacker News
Chinese Hackers Murky, Genesis, and Glacial Panda Escalate Cloud and Telecom Espionage
Cybersecurity researchers are calling attention to malicious activity orchestrated by a China-nexus cyber espionage group known as Murky Panda that involves abusing trusted relationships in the cloud ... Read more
-
Cyber Security News
Citrix NetScaler ADC and Gateway Vulnerability Actively Exploited in the Wild
Cloud Software Group has issued an urgent security advisory warning customers about a critical memory overflow vulnerability in NetScaler ADC and Gateway products, which could enable denial-of-service ... Read more
-
security.nl
FBI: ransomware-aanvallen via jaren oude Citrix-kwetsbaarheden
Aanvallers maken nog altijd gebruik van jaren oude Citrix-kwetsbaarheden om organisaties met ransomware te infecteren, zo stelt de FBI. Ook oude kwetsbaarheden in firewalls van Palo Alto Networks en B ... Read more
-
Dark Reading
China's Silk Typhoon APT Shifts to IT Supply Chain Attacks
Source: Chebakalex7 via ShutterstockThe China-backed cyber-espionage group known as "Silk Typhoon" has begun targeting organizations in the IT supply chain to gain access to their downstream customers ... Read more
-
BleepingComputer
Silk Typhoon hackers now target IT supply chains to breach networks
Microsoft warns that Chinese cyber-espionage threat group 'Silk Typhoon' has shifted its tactics, now targeting remote management tools and cloud services in supply chain attacks that give them access ... Read more
-
The Register
China's Silk Typhoon, tied to US Treasury break-in, now hammers IT and govt targets
Silk Typhoon, the Chinese government crew believed to be behind the December US Treasury intrusions, has been abusing stolen API keys and cloud credentials in ongoing attacks targeting IT companies an ... Read more
-
The Hacker News
China-Linked Silk Typhoon Expands Cyber Attacks to IT Supply Chains for Initial Access
Network Security / Data Breach The China-lined threat actor behind the zero-day exploitation of security flaws in Microsoft Exchange servers in January 2021 has shifted its tactics to target the infor ... Read more
-
Help Net Security
What 2024 taught us about security vulnerabilties
From zero-day exploits to weaknesses in widely used software and hardware, the vulnerabilities uncovered last year underscore threat actors’ tactics and the critical gaps in organizational defenses. T ... Read more
-
TheCyberThrone
Chinese MirrorFace APT targets Japan
The MirrorFace Advanced Persistent Threat (APT) group, also known as Earth Kasha, has been linked to a series of cyber-attacks targeting Japan. These attacks have been ongoing since 2019 and have prim ... Read more
-
Dark Reading
Chinese APT Group Is Ransacking Japan's Secrets
Source: Birgit Korber via Alamy Stock PhotoThe National Police Agency and the National Center of Incident Readiness and Strategy for Cybersecurity warned Japanese organizations of a sophisticated Chin ... Read more
-
BleepingComputer
MirrorFace hackers targeting Japanese govt, politicians since 2019
The National Police Agency (NPA) and the Cabinet Cyber Security Center in Japan have linked a cyber-espionage campaign targeting the country to the Chinese state-backed "MirrorFace" hacking group. The ... Read more
-
Cybersecurity News
MirrorFace: Unmasking the Chinese Cyber Espionage Group Targeting Japan
On January 8, 2025, the Japanese National Police Agency (NPA) issued a critical warning regarding ongoing cyberattacks attributed to the MirrorFace group, also known as “Earth Kasha.” Active since 201 ... Read more
-
Trend Micro
Spot the Difference: Earth Kasha's New LODEINFO Campaign And The Correlation Analysis With The APT10 Umbrella
This blog is based on a presentation by the authors at Virus Bulletin 2024. Introduction LODEINFO is a malware used in attacks targeting mainly Japan since 2019. Trend Micro has been tracking the grou ... Read more
-
TheCyberThrone
Top 15 Most Exploited Vulnerabilities in 2023
In a joint cybersecurity advisory, the security agencies across the world have identified the most exploited vulnerabilities of 2023. This advisory, coauthored by the Cybersecurity and Infrastructure ... Read more
-
The Register
Five Eyes infosec agencies list 2024's most exploited software flaws
The cyber security agencies of the UK, US, Canada, Australia, and New Zealand have issued their annual list of the 15 most exploited vulnerabilities, and warned that attacks on zero-day exploits have ... Read more
-
Help Net Security
Zero-days dominate top frequently exploited vulnerabilities
A joint report by leading cybersecurity agencies from the U.S., UK, Canada, Australia, and New Zealand has identified the most commonly exploited vulnerabilities of 2023. Zero-day vulnerabilities on t ... Read more
The following table lists the changes that have been made to the
CVE-2023-3519 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.
-
Modified Analysis by [email protected]
Oct. 24, 2025
Action Type Old Value New Value Added Reference Type CISA-ADP: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-3519 Types: US Government Resource -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-3519 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Removed Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-3519 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 21, 2025
Action Type Old Value New Value Added Reference https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-3519 -
Modified Analysis by [email protected]
Mar. 10, 2025
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 13, 2025
Action Type Old Value New Value Changed Description Unauthenticated remote code execution Unauthenticated remote code execution -
Modified Analysis by [email protected]
Jan. 27, 2025
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:citrix:netscaler_application_delivery_controller:11.1-65.22:*:*:*:fips:*:*:* *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* versions from (including) 12.1 up to (excluding) 12.1-55.297 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* versions from (including) 12.1 up to (excluding) 12.1-55.297 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* versions from (including) 13.0 up to (excluding) 13.0-91.13 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* versions from (including) 13.1 up to (excluding) 13.1-37.159 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* versions from (including) 13.1 up to (excluding) 13.1-49.13 *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.0-91.13 *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 13.1 up to (excluding) 13.1-49.13 OR *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* versions from (including) 12.1 up to (excluding) 12.1-55.297 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* versions from (including) 12.1 up to (excluding) 12.1-55.297 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* versions from (including) 13.0 up to (excluding) 13.0-91.13 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* versions from (including) 13.1 up to (excluding) 13.1-37.159 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* versions from (including) 13.1 up to (excluding) 13.1-49.13 *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.0-91.13 *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 13.1 up to (excluding) 13.1-49.13 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html Added Reference https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467 -
Modified Analysis by [email protected]
Jun. 27, 2024
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Aug. 04, 2023
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html [No Types Assigned] -
Initial Analysis by [email protected]
Jul. 19, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467 No Types Assigned https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467 Vendor Advisory Added CWE NIST CWE-94 Added CPE Configuration OR *cpe:2.3:a:citrix:netscaler_application_delivery_controller:11.1-65.22:*:*:*:fips:*:*:* *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* versions from (including) 12.1 up to (excluding) 12.1-55.297 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:ndcpp:*:*:* versions from (including) 12.1 up to (excluding) 12.1-55.297 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* versions from (including) 13.0 up to (excluding) 13.0-91.13 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:fips:*:*:* versions from (including) 13.1 up to (excluding) 13.1-37.159 *cpe:2.3:a:citrix:netscaler_application_delivery_controller:*:*:*:*:-:*:*:* versions from (including) 13.1 up to (excluding) 13.1-49.13 *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.0-91.13 *cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* versions from (including) 13.1 up to (excluding) 13.1-49.13
Vulnerability Scoring Details
Base CVSS Score: 9.8
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
94.06 }} -0.02%
score
0.99890
percentile