CVE-2023-3519

critical

Description

Unauthenticated remote code execution

From the Tenable Blog

CVE-2023-3519: Critical RCE in Netscaler ADC (Citrix ADC) and Netscaler Gateway (Citrix Gateway)

Published: 2023-07-18

Citrix has released a patch fixing a remote code execution vulnerability in several versions of Netscaler ADC and Netscaler Gateway that has been exploited. Organizations are urged to patch immediately.

References

https://www.theregister.com/2025/03/05/china_silk_typhoon_update/

https://www.microsoft.com/en-us/security/blog/2025/03/05/silk-typhoon-targeting-it-supply-chain/

https://www.darkreading.com/remote-workforce/china-silk-typhoon-it-supply-chain-attacks

https://www.bleepingcomputer.com/news/security/silk-typhoon-hackers-now-target-it-supply-chains-to-breach-networks/

https://thehackernews.com/2025/03/china-linked-silk-typhoon-expands-cyber.html

https://www.security.com/threat-intelligence/ransomware-trends-2025

https://www.securityweek.com/citrix-cisco-fortinet-zero-days-among-2023s-most-exploited-vulnerabilities/

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-317a

https://www.reliaquest.com/blog/inc-ransom-attack-analysis-extortion-methodologies/

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-242a

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-241a

https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-207a

https://securityaffairs.com/164838/breaking-news/excobalt-cybercrime-group-targets-russian-orgs.html

https://services.google.com/fh/files/misc/m-trends-2024.pdf

https://therecord.media/xerox-xbs-cyberattack?&web_view=true

https://www.tenable.com/blog/aa24-241a-joint-cybersecurity-advisory-on-iran-based-cyber-actors-targeting-us-organizations

https://www.tenable.com/blog/cve-2023-3519-critical-rce-in-netscaler-adc-citrix-adc-and-netscaler-gateway-citrix-gateway

https://support.citrix.com/article/CTX561482/citrix-adc-and-citrix-gateway-security-bulletin-for-cve20233519-cve20233466-cve20233467

http://packetstormsecurity.com/files/173997/Citrix-ADC-NetScaler-Remote-Code-Execution.html

Details

Source: Mitre, NVD

Published: 2023-07-19

Updated: 2025-03-10

Known Exploited Vulnerability (KEV)

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.88671

Vulnerability Watch

Tenable Research has classified this CVE under the following Vulnerability Watch classification, which includes active and historical (inactive) classifications. You can learn more about these classifications on our blog.

Vulnerability of Concern

Detections

Analytics