CVE-2019-19781

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 1.000 · 100 %ileexploit · weaponizedEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 49 exploits · weaponized

Likely / severe?

100.0% (100th) EPSS

CVSS 7.5 · high

Is it mine?

21 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2021-11-03remediate by 2022-05-03

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-25

Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability

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

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimaryCWE-22US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

exploits (49)

Public proof-of-concept and weaponised exploit code.

exploit/freebsd/http/citrix_dir_traversal_rceCitrix ADC (NetScaler) Directory Traversal RCEweaponized · metasploit
auxiliary/scanner/http/citrix_dir_traversalCitrix ADC (NetScaler) Directory Traversal Scannerfunctional · metasploit
EDB-47901Citrix Application Delivery Controller and Citrix Gateway - Remote Code Execution (PoC)PoC · exploit_db
EDB-47913Citrix Application Delivery Controller and Gateway 10.5 - Remote Code Execution (Metasploit)PoC · exploit_db
EDB-47930Citrix Application Delivery Controller (ADC) and Gateway 13.0 - Path TraversalPoC · exploit_db
0xams/citrixvulnchecka script to look for CVE-2019-19781 Vulnerability within a domain and it's subdomainsPoC · poc_in_github

affected products (21)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Citrix Systems Inc. NetScaler Application Delivery Controller≤ 13.0fstec_bduRU
Citrix Systems Inc. NetScaler Application Delivery Controller≤ 12.1fstec_bduRU
Citrix Systems Inc. NetScaler Application Delivery Controller≤ 12.0fstec_bduRU
Citrix Systems Inc. NetScaler Application Delivery Controller≤ 11.1fstec_bduRU
Citrix Systems Inc. NetScaler Application Delivery Controller≤ 10.5fstec_bduRU
Citrix Systems Inc. NetScaler Gateway≤ 10.5fstec_bduRU
Citrix Systems Inc. NetScaler Gateway≤ 13.0fstec_bduRU
Citrix Systems Inc. NetScaler Gateway≤ 12.1fstec_bduRU
Citrix Systems Inc. NetScaler Gateway≤ 12.0fstec_bduRU
Citrix Systems Inc. NetScaler Gateway≤ 11.1fstec_bduRU
citrix application delivery controller firmware= 10.5nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix application delivery controller firmware= 11.1nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix application delivery controller firmware= 12.0nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix application delivery controller firmware= 12.1nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix application delivery controller firmware= 13.0nvdUScpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
citrix gateway firmware= 13.0nvdUScpe:2.3:o:citrix:gateway_firmware:*:*:*:*:*:*:*:*
citrix netscaler gateway firmware= 10.5nvdUScpe:2.3:o:citrix:netscaler_gateway_firmware:*:*:*:*:*:*:*:*
citrix netscaler gateway firmware= 11.1nvdUScpe:2.3:o:citrix:netscaler_gateway_firmware:*:*:*:*:*:*:*:*
citrix netscaler gateway firmware= 12.0nvdUScpe:2.3:o:citrix:netscaler_gateway_firmware:*:*:*:*:*:*:*:*

showing 20 of 21

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2019-12-27modified 2026-08-12

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+12489 more

references (37)

External citations — patches, advisories, analysis.

scry

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