CASCACascade Atlas

Evidence dossier

CVE-2019-19781

An issue was discovered in Citrix Application Delivery Controller (ADC) and Gateway 10.5, 11.1, 12.0, 12.1, and 13.0.

Exploited in the wild (CISA KEV since Nov 3, 2021). NVD reports CVSS 3.1 9.8. EPSS estimates 100.0% exploit likelihood as of Aug 6, 2026.

88.6–89.8Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

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.

State
PUBLISHED
Published
Dec 27, 2019
Updated
Oct 21, 2025
Evidence coverage
98%

Evidence chronology

What was known when

Download this view's receipt →
  1. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    mitre

    Record text: 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.

    Inspect raw assertion
    Field
    container
    Value
    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.
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

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

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 100% probability · 100th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.999990000000; percentile 0.999970000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Nov 3, 2021 · first observed Jul 19, 2026

Exploit likelihood100.00%

FIRST EPSS · score date Aug 6, 2026 · 100th percentile · first observed Aug 6, 2026

SeverityCVSS 9.8

NVD · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
None
Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision
casca-factor-d-obligations-v1
Cutoff
Aug 27, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

Inspect raw assertion
Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
mitreOriginal assertion
Record text

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.

Inspect raw assertion
Field
container
Value
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.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

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

Inspect raw assertion
Field
observed_exploitation
Value
Citrix ADC, Gateway, and SD-WAN WANOP Appliance Code Execution Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

100% probability · 100th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.999990000000; percentile 0.999970000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
13Underlying assertions
6Canonical products
10Target assertions
3Constraint assertions

Grouped from 6 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

7 scope groups

mitre · source assertedn/an/aDirect source scope
Affected: n/a
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "n/a"}]
NVD CPE · HARDWAREcitrixapplication_delivery_controllerEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-38fa8217b70d214402fb4647b120c95ce0fdaa2d2ee42d6e5c5db36130c746f7Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    80e69e10-6f40-4fe4-9d84-f6c25eab79d8
NVD CPE · OPERATING SYSTEMcitrixapplication_delivery_controller_firmwareVulnerable target · 5 assertions
Version 10.5; Version 11.1; Version 12.0; Version 12.1; Version 13.0Canonical identity product-74f89a03a794cfd5616f30fe592f30eb465dda6c915da7e76ed8b8c72bac689bLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:citrix:application_delivery_controller_firmware:13.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a3a50966-5554-4919-b6ce-bd8f6ff991d8
  2. cpe:2.3:o:citrix:application_delivery_controller_firmware:12.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    201246d4-1e22-4f28-9683-d6a9fd0f7a6b
  3. cpe:2.3:o:citrix:application_delivery_controller_firmware:12.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    49454f7d-77b5-46df-b95c-312af2e68ead
  4. cpe:2.3:o:citrix:application_delivery_controller_firmware:11.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    8ce9e655-0d97-4dcf-ac2f-79dcd12770e5
  5. cpe:2.3:o:citrix:application_delivery_controller_firmware:10.5:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d56f2aaf-4658-484c-9a3a-d8a52ba5b10c
NVD CPE · HARDWAREcitrixgatewayEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-b17ed077d46db0f74d4c8491a551ccfdd302b2615e87b091d2c00d33c800b492Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:citrix:gateway:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    3ef98b43-71db-4230-b7ac-76ec2b1f0533
NVD CPE · OPERATING SYSTEMcitrixgateway_firmwareVulnerable target · 1 assertions
Version 13.0Canonical identity product-829994e2b3ac7aea9e17116454437c3851ed8a99c09dcfe4202719f57a4c29a9Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:citrix:gateway_firmware:13.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a80eafb1-82da-49be-815d-d248624b442c
NVD CPE · HARDWAREcitrixnetscaler_gatewayEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-751cde0354a003f8ebfed98d8f4911a5c14fb46599ca072358451971090f4ee7Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:citrix:netscaler_gateway:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    debb9b6a-1cad-4d82-9b1e-939921986053
NVD CPE · OPERATING SYSTEMcitrixnetscaler_gateway_firmwareVulnerable target · 4 assertions
Version 10.5; Version 11.1; Version 12.0; Version 12.1Canonical identity product-21abd5a5f37a71ec35390b4587ab5a2d4c6695610a7c8d41c95e2049552310f0Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:citrix:netscaler_gateway_firmware:12.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    58349f8e-3177-413a-9cbe-bb454dcd31e4
  2. cpe:2.3:o:citrix:netscaler_gateway_firmware:11.1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a5d73b9a-59aa-4a38-aeaf-7eab0965cd7e
  3. cpe:2.3:o:citrix:netscaler_gateway_firmware:12.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b9f3ed0e-7f3d-477b-b645-77da5fc7f502
  4. cpe:2.3:o:citrix:netscaler_gateway_firmware:10.5:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    7e0fa8e2-3e8f-481e-8c39-fb00a9739dfc

Affected-product evidence

Accepted scope and product mapping

3 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-613dd4bb79ad8759a10407fe624cb651bdb422f3f2780231736f064b614ee756 · product-21abd5a5f37a71ec35390b4587ab5a2d4c6695610a7c8d41c95e2049552310f0

Source class
Nvd cpe vulnerable target
Assertions
4
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
416453f0-a704-4bd9-a223-33f14ddb6b714f62f939-6140-4fa6-9805-10eb4636583ed2d5f7e4-5f6e-4dcd-a8b6-c80a0c75c820fc3926ec-489e-4fc2-8632-55d0768fa355
Mapping establishedEvidence supported

vendor-613dd4bb79ad8759a10407fe624cb651bdb422f3f2780231736f064b614ee756 · product-74f89a03a794cfd5616f30fe592f30eb465dda6c915da7e76ed8b8c72bac689b

Source class
Nvd cpe vulnerable target
Assertions
5
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
246d6d90-8c53-407e-ad4e-839b803680de4e90aff4-3692-4e9b-babb-e631b605b6227cc9d2be-1419-4e69-b33c-23ccb0988c43a681a643-a8c7-4151-a28e-793f033dcb8faf9d4358-44d7-4829-be93-b1b24134fc92
Mapping establishedEvidence supported

vendor-613dd4bb79ad8759a10407fe624cb651bdb422f3f2780231736f064b614ee756 · product-829994e2b3ac7aea9e17116454437c3851ed8a99c09dcfe4202719f57a4c29a9

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
6eec41e4-53f6-460a-b9a6-30604804a7fe
Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Direct cve affected
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
c43b9ea8-b8d6-4a3d-b173-5d01af49b01f

Assessments

CVSS by origin

9.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

9.8Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
9.8
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.