CVE-2019-19781
Summary
| CVE | CVE-2019-19781 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2019-12-27 14:15:12 UTC |
| Updated | 2026-08-12 05:17:21 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.999990000 probability, percentile 0.999980000 (date 2026-08-13)
CISA KEV: Listed on 2021-11-03; due 2022-05-03; ransomware use Known
Problem Types: CWE-22 | n/a | CWE-22 CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | ADP | DECLARED | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:N/AC:L/Au:N/C:P/I:P/A:P
CISA Known Exploited Vulnerability
| Vendor | Citrix |
|---|---|
| Product | Application Delivery Controller (ADC), Gateway, and SD-WAN WANOP Appliance |
| Name | Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability |
| Required Action | Apply updates per vendor instructions. |
| Notes | https://nvd.nist.gov/vuln/detail/CVE-2019-19781 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Hardware | Citrix | Application Delivery Controller | - | All | All | All |
| Operating System | Citrix | Application Delivery Controller Firmware | 10.5 | All | All | All |
| Operating System | Citrix | Application Delivery Controller Firmware | 11.1 | All | All | All |
| Operating System | Citrix | Application Delivery Controller Firmware | 12.0 | All | All | All |
| Operating System | Citrix | Application Delivery Controller Firmware | 12.1 | All | All | All |
| Operating System | Citrix | Application Delivery Controller Firmware | 13.0 | All | All | All |
| Hardware | Citrix | Gateway | - | All | All | All |
| Operating System | Citrix | Gateway Firmware | 13.0 | All | All | All |
| Hardware | Citrix | Netscaler Gateway | - | All | All | All |
| Operating System | Citrix | Netscaler Gateway Firmware | 10.5 | All | All | All |
| Operating System | Citrix | Netscaler Gateway Firmware | 11.1 | All | All | All |
| Operating System | Citrix | Netscaler Gateway Firmware | 12.0 | All | All | All |
| Operating System | Citrix | Netscaler Gateway Firmware | 12.1 | All | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Bad Packets Report on Twitter: "Mass scanning activity detected from 82.102.16.220 (????????) checking for Citrix NetScaler Gateway endpoints vulnerable to CVE-2019-19781. Affected organizations are advised to apply the mitigation steps provided by Citrix as no patch exists yet. https://t.co/weFVYpEWi2 #threatintel… https://t.co/scWTr4TcYb" | af854a3a-2127-422b-91ae-364da2661108 | twitter.com | Broken Link, Third Party Advisory |
| Citrix Application Delivery Controller / Gateway 10.5 Remote Code Execution ≈ Packet Storm | af854a3a-2127-422b-91ae-364da2661108 | packetstormsecurity.com | Third Party Advisory, VDB Entry |
| Citrix ADC / Gateway Path Traversal ≈ Packet Storm | af854a3a-2127-422b-91ae-364da2661108 | packetstormsecurity.com | Third Party Advisory, VDB Entry |
| Citrix Application Delivery Controller / Gateway Remote Code Execution ≈ Packet Storm | af854a3a-2127-422b-91ae-364da2661108 | packetstormsecurity.com | Third Party Advisory, VDB Entry |
| Citrix ADC (NetScaler) Directory Traversal / Remote Code Execution ≈ Packet Storm | af854a3a-2127-422b-91ae-364da2661108 | packetstormsecurity.com | Third Party Advisory, VDB Entry |
| Citrix Application Delivery Controller / Gateway Remote Code Execution / Traversal ≈ Packet Storm | af854a3a-2127-422b-91ae-364da2661108 | packetstormsecurity.com | Third Party Advisory, VDB Entry |
| Over 25,000 Citrix (NetScaler) endpoints vulnerable to CVE-2019-19781 – Bad Packets | af854a3a-2127-422b-91ae-364da2661108 | badpackets.net | Broken Link, Third Party Advisory |
| VU#619785 - Citrix Application Delivery Controller, Citrix Gateway, and Citrix SD-WAN WANOP web server vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.kb.cert.org | Third Party Advisory, US Government Resource |
| CVE-2019-19781 Report Request | af854a3a-2127-422b-91ae-364da2661108 | forms.gle | Third Party Advisory |
| www.cisa.gov/known-exploited-vulnerabilities-catalog | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.cisa.gov | US Government Resource |
| CVE-2019-19781 - Vulnerability in Citrix Application Delivery Controller and Citrix Gateway | af854a3a-2127-422b-91ae-364da2661108 | support.citrix.com | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2021-11-03T00:00:00.000Z | CVE-2019-19781 added to CISA KEV |
There are currently no legacy QID mappings associated with this CVE.