CVE-2019-19781
CRITICALCISA KEVEPSS 100th pctlDescription
An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0. They allow Directory Traversal.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability
Citrix ADC, Citrix Gateway, and multiple Citrix SD-WAN WANOP appliance models contain an unspecified vulnerability that could allow an unauthenticated attacker to perform code execution.
Apply updates per vendor instructions.
Remediation due: 2022-05-03
Associated with ransomware campaigns
References
- http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html
- http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155947/Citrix-ADC-NetScaler-Directory-Traversal-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/155972/Citrix-ADC-Gateway-Path-Traversal.html
- https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/
- https://forms.gle/eDf3DXZAv96oosfj6
- https://support.citrix.com/article/CTX267027
- https://twitter.com/bad_packets/status/1215431625766424576
- https://www.kb.cert.org/vuls/id/619785
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-19781
Find and fix vulnerabilities across your fleet
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-07.