CVE-2019-19781

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 100.00%
EPSS Percentile: 100.00%
CISA KEV: YES — Known Exploited Vulnerability

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 27-Dec-2019 21:15
Last Modified: 12-Aug-2026 12:17
EPSS Date: 2026-10-19
CWE: CWE-22

CVSS Vector


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

CISA KEV Details

Date Added: 2021-11-03
Remediation Due: 2022-05-03
Known Ransomware Campaign Use: Known
Required Action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2019-19781

Affected Products / Versions

citrix / application_delivery_controller_firmware
Version / affected range: 10.5
cpe:2.3:o:citrix:application_delivery_controller_firmware:10.5:*:*:*:*:*:*:*
citrix / application_delivery_controller_firmware
Version / affected range: 11.1
cpe:2.3:o:citrix:application_delivery_controller_firmware:11.1:*:*:*:*:*:*:*
citrix / application_delivery_controller_firmware
Version / affected range: 12.0
cpe:2.3:o:citrix:application_delivery_controller_firmware:12.0:*:*:*:*:*:*:*
citrix / application_delivery_controller_firmware
Version / affected range: 12.1
cpe:2.3:o:citrix:application_delivery_controller_firmware:12.1:*:*:*:*:*:*:*
citrix / application_delivery_controller_firmware
Version / affected range: 13.0
cpe:2.3:o:citrix:application_delivery_controller_firmware:13.0:*:*:*:*:*:*:*
citrix / netscaler_gateway_firmware
Version / affected range: 10.5
cpe:2.3:o:citrix:netscaler_gateway_firmware:10.5:*:*:*:*:*:*:*
citrix / netscaler_gateway_firmware
Version / affected range: 11.1
cpe:2.3:o:citrix:netscaler_gateway_firmware:11.1:*:*:*:*:*:*:*
citrix / netscaler_gateway_firmware
Version / affected range: 12.0
cpe:2.3:o:citrix:netscaler_gateway_firmware:12.0:*:*:*:*:*:*:*
citrix / netscaler_gateway_firmware
Version / affected range: 12.1
cpe:2.3:o:citrix:netscaler_gateway_firmware:12.1:*:*:*:*:*:*:*
citrix / gateway_firmware
Version / affected range: 13.0
cpe:2.3:o:citrix:gateway_firmware:13.0:*:*:*:*:*:*:*

References

Last enrichment sync: 20-Oct-2026 11:55
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (2)

in Ivanti CSA appliances) and N-day vulnerabilities (CVE-2018-13379 in Fortinet SSL-VPN, CVE-2019-19781 in Citrix ADC, CVE-2021-26855 in Microsoft Exchange Server, CVE-2020-5902 in F5 BIG-IP, DOJ Disrupts QScan and QTRouter Platforms Attributed to China-Linked QTFY
CVE-2019-19781: Citrix | Arbitrary Code Execution Four CVEs Attackers Exploited in 2020 and How to Mitigate Them

CVE (14)

People (3)

Threat Actors (1)

MITRE ATT&CK (5)

Vendors (4)

Products (9)

Tools (1)

Industries (1)

Countries (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.