{"id":"CVE-2019-19781","title":"An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0","summary":"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.","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-22","CWE-22"],"vendor":"citrix","product":"application_delivery_controller_firmware","affected":["application_delivery_controller_firmware = 10.5","application_delivery_controller_firmware = 11.1","application_delivery_controller_firmware = 12.0","application_delivery_controller_firmware = 12.1","application_delivery_controller_firmware = 13.0","netscaler_gateway_firmware = 10.5","netscaler_gateway_firmware = 11.1","netscaler_gateway_firmware = 12.0","netscaler_gateway_firmware = 12.1","gateway_firmware = 13.0"],"published":"2019-12-27","updated":"2026-08-12","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2019-19781","references":[{"url":"http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.html","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/155947/Citrix-ADC-NetScaler-Directory-Traversal-Remote-Code-Execution.html","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/155972/Citrix-ADC-Gateway-Path-Traversal.html","label":"cve@mitre.org"},{"url":"https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/","label":"cve@mitre.org"},{"url":"https://forms.gle/eDf3DXZAv96oosfj6","label":"cve@mitre.org"},{"url":"https://support.citrix.com/article/CTX267027","label":"cve@mitre.org"},{"url":"https://twitter.com/bad_packets/status/1215431625766424576","label":"cve@mitre.org"},{"url":"https://www.kb.cert.org/vuls/id/619785","label":"cve@mitre.org"},{"url":"http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/155947/Citrix-ADC-NetScaler-Directory-Traversal-Remote-Code-Execution.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/155972/Citrix-ADC-Gateway-Path-Traversal.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://forms.gle/eDf3DXZAv96oosfj6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://support.citrix.com/article/CTX267027","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://twitter.com/bad_packets/status/1215431625766424576","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.kb.cert.org/vuls/id/619785","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-19781","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","kev","in-the-wild","exploit-available"],"epss":0.99999,"epssPercentile":0.99998,"kev":true,"kevDateAdded":"2021-11-03","kevDueDate":"2022-05-03","kevRansomware":true,"exploited":true,"exploitAvailable":true,"ingestedAt":"2026-08-12T05:52:07.400Z","exploits":{"exploitdb":true,"github":44,"githubRepos":["https://github.com/projectzeroindia/CVE-2019-19781","https://github.com/trustedsec/cve-2019-19781","https://github.com/cisagov/check-cve-2019-19781"],"metasploit":["auxiliary/scanner/http/citrix_dir_traversal","exploit/freebsd/http/citrix_dir_traversal_rce"],"nuclei":["CVE-2019-19781"],"checkedAt":"2026-09-08T15:36:49.154Z"},"slug":"CVE-2019-19781","body":"## Overview\n\nAn 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.\n\n## Affected\n\n- `application_delivery_controller_firmware = 10.5`\n- `application_delivery_controller_firmware = 11.1`\n- `application_delivery_controller_firmware = 12.0`\n- `application_delivery_controller_firmware = 12.1`\n- `application_delivery_controller_firmware = 13.0`\n- `netscaler_gateway_firmware = 10.5`\n- `netscaler_gateway_firmware = 11.1`\n- `netscaler_gateway_firmware = 12.0`\n- `netscaler_gateway_firmware = 12.1`\n- `gateway_firmware = 13.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"hadal","depthScore":100,"depthScoreParts":{"impact":53.9,"likelihood":20,"exploitation":25,"ransomware":5},"changes":[]}