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CVE-2023-3519

Published: Jul 19, 2023Updated: Oct 24, 2025 Sources: CVE List NVD BDUCWE-94
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
99.3%
Top 0.1%
CISA KEV
Active Exploitation
Since Jul 19, 2023
Exploits
1 Known
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

Description

Unauthenticated remote code execution

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-94

Affected Products

NetScaler ADCCitrix
Mixed
Cloud & SaaS / virtualization
NetScaler GatewayCitrix
On-premSecurity Product
Networking Infrastructure
Citrix ADCCitrix Systems Inc.
SaaSSaaS Service
Cloud & SaaS / api-gateway
Citrix GatewayCitrix Systems Inc.
Mixed
Cloud & SaaS
netscaler application delivery controllercitrix
On-premNetwork Device
Networking Infrastructure / load-balancer-proxy
citrixcommercialUSCloud & SaaSaka xenserver, netscaler gateway firmware, application delivery controller firmware
citrix systems inc.commercialUSCloud & SaaSaka citrix adc, netscaler gateway, citrix gateway
and 1 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Jul 19, 2023
Remediation due:Aug 9, 2023
Ransomware:Known ransomware use

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467
support.citrix.com
http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html
packetstormsecurity.com
https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467
support.citrix.com
and 2 more references View all →

Timeline

Added to CISA KEV
Jul 19, 2023
Published
Jul 19, 2023
Last Updated
Oct 24, 2025
News mentions
2

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