CASCACascade Atlas

Evidence dossier

CVE-2022-27518

Unauthenticated remote arbitrary code execution

Exploited in the wild (CISA KEV since Dec 13, 2022). NVD reports CVSS 3.1 9.8. EPSS estimates 6.9% exploit likelihood as of Aug 27, 2026.

73.3–74.6Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Unauthenticated remote arbitrary code execution

State
PUBLISHED
Published
Dec 13, 2022
Updated
Oct 21, 2025
Evidence coverage
97%

Evidence chronology

What was known when

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  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
    Citrix

    Record text: Unauthenticated remote arbitrary code execution

    Inspect raw assertion
    Field
    container
    Value
    Unauthenticated remote arbitrary code execution
    Original evidence ↗
  3. 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 ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 6.88% probability · 93.56th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.068750000000; percentile 0.935610000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Dec 13, 2022 · first observed Jul 19, 2026

Exploit likelihood6.88%

FIRST EPSS · score date Aug 27, 2026 · 93.6th percentile · first observed Aug 27, 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 ↗
CitrixOriginal assertion
Record text

Unauthenticated remote arbitrary code execution

Inspect raw assertion
Field
container
Value
Unauthenticated remote arbitrary code execution
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 ↗
CISA KEVOriginal assertion
Exploitation cataloged

Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Citrix Application Delivery Controller (ADC) and Gateway Authentication Bypass Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

6.88% probability · 93.56th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.068750000000; percentile 0.935610000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
8Underlying assertions
4Canonical products
6Target assertions
2Constraint assertions

Grouped from 4 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

5 scope groups

Citrix · source assertedCitrixCitrix Gateway, Citrix ADCDirect source scope
Affected: 12.1Affected: 13.0Affected: 12.1 FIPs, NDcPP
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "12.1"}, {"status": "affected", "version": "13.0"}, {"status": "affected", "version": "12.1 FIPs, NDcPP"}]
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 · 4 assertions
Any version (unconstrained) (>= 12.1, < 12.1-55.291); Any version (unconstrained) (>= 12.1, < 12.1-65.25); Any version (unconstrained) (>= 13.0, < 13.0-58.32)Canonical identity product-74f89a03a794cfd5616f30fe592f30eb465dda6c915da7e76ed8b8c72bac689bLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    from including 12.1; through excluding 12.1-65.25
    Match ID
    1d0b760b-b3b6-442a-8c54-aa8a6d63660b
  2. cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    from including 13.0; through excluding 13.0-58.32
    Match ID
    7ebf9be3-e779-4621-8409-1a61da07f6ff
  3. cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:ndcpp:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    from including 12.1; through excluding 12.1-55.291
    Match ID
    0fb77a6c-768d-4084-924b-5f0607fe6d83
  4. cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:fips:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    from including 12.1; through excluding 12.1-55.291
    Match ID
    59ca6cb8-1b2c-4265-82ed-802d4d387ead
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
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    3ef98b43-71db-4230-b7ac-76ec2b1f0533
NVD CPE · OPERATING SYSTEMcitrixgateway_firmwareVulnerable target · 2 assertions
Any version (unconstrained) (>= 12.1, < 12.1-65.25); Any version (unconstrained) (>= 13.0, < 13.0-58.32)Canonical identity product-829994e2b3ac7aea9e17116454437c3851ed8a99c09dcfe4202719f57a4c29a9Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:o:citrix:gateway_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    from including 12.1; through excluding 12.1-65.25
    Match ID
    fb4301cb-ebf3-41d7-8a17-7e0b9e452780
  2. cpe:2.3:o:citrix:gateway_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 1
    Logic
    OR
    Version bounds
    from including 13.0; through excluding 13.0-58.32
    Match ID
    fd9f0308-2bd3-403f-b90e-eeb1b6845627

Affected-product evidence

Accepted scope and product mapping

2 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-613dd4bb79ad8759a10407fe624cb651bdb422f3f2780231736f064b614ee756 · product-74f89a03a794cfd5616f30fe592f30eb465dda6c915da7e76ed8b8c72bac689b

Source class
Nvd cpe vulnerable target
Assertions
4
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
136d3c18-a9b3-4694-9d95-364b403366f85204cc16-0480-4bf8-8279-66d4de883510e6b86ce0-5851-46c0-b5f8-dd9bd73ac87efe8181ed-a580-4d95-a620-0eb3d8003a75
Mapping establishedEvidence supported

vendor-613dd4bb79ad8759a10407fe624cb651bdb422f3f2780231736f064b614ee756 · product-829994e2b3ac7aea9e17116454437c3851ed8a99c09dcfe4202719f57a4c29a9

Source class
Nvd cpe vulnerable target
Assertions
2
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
04114633-c20f-4869-93fd-a04cc8cc4868e877d300-88d0-4b52-b54e-a5fefb7af2de
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
b72fab0a-cfc1-4543-905b-04f20c54f2ef

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
9.8
secure@citrix.comCVSS 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
CitrixCVSS 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

Citrix

CVSS 3.1 · Primary · Original assertion · rank 1

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.