CVE-2019-19781

9.8 CRITICAL CISA KEV - Actively Exploited

Published: December 27, 2019 Modified: November 07, 2025

Description

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.html

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/155947/Citrix-ADC-NetScaler-Directory-Traversal-Remote-Code-Execution.html

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/155972/Citrix-ADC-Gateway-Path-Traversal.html

Source: cve@mitre.org

Third Party Advisory VDB Entry

https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/

Source: cve@mitre.org

Broken Link Third Party Advisory

https://forms.gle/eDf3DXZAv96oosfj6

Source: cve@mitre.org

Third Party Advisory

https://support.citrix.com/article/CTX267027

Source: cve@mitre.org

Vendor Advisory

https://twitter.com/bad_packets/status/1215431625766424576

Source: cve@mitre.org

Broken Link Third Party Advisory

https://www.kb.cert.org/vuls/id/619785

Source: cve@mitre.org

Third Party Advisory US Government Resource

http://packetstormsecurity.com/files/155904/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/155905/Citrix-Application-Delivery-Controller-Gateway-Remote-Code-Execution-Traversal.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/155930/Citrix-Application-Delivery-Controller-Gateway-10.5-Remote-Code-Execution.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/155947/Citrix-ADC-NetScaler-Directory-Traversal-Remote-Code-Execution.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

http://packetstormsecurity.com/files/155972/Citrix-ADC-Gateway-Path-Traversal.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

https://badpackets.net/over-25000-citrix-netscaler-endpoints-vulnerable-to-cve-2019-19781/

Source: af854a3a-2127-422b-91ae-364da2661108

Broken Link Third Party Advisory

https://forms.gle/eDf3DXZAv96oosfj6

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://support.citrix.com/article/CTX267027

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://twitter.com/bad_packets/status/1215431625766424576

Source: af854a3a-2127-422b-91ae-364da2661108

Broken Link Third Party Advisory

https://www.kb.cert.org/vuls/id/619785

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory US Government Resource

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-19781

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

21 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

94.4%

100th percentile

Exploitation Status

Actively Exploited

Remediation due: 2022-05-03

Weaknesses (CWE)

CWE-22 CWE-22

Affected Vendors

citrix

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