FKIE_CVE-2021-22919
Vulnerability from fkie_nvd - Published: 2021-08-05 21:15 - Updated: 2026-06-17 03:38
Severity
Summary
A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN WANOP Edition models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could lead to the limited available disk space on the appliances being fully consumed.
References
| URL | Tags | ||
|---|---|---|---|
| support@hackerone.com | https://support.citrix.com/article/CTX319135 | Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://support.citrix.com/article/CTX319135 | Vendor Advisory |
Impacted products
{
"affected": [
{
"affectedData": [
{
"product": "Citrix ADC, Citrix Gateway, Citrix SD-WAN WANOP",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Citrix ADC and Citrix Gateway 13.0-82.45 and later releases of 13.0 Citrix ADC and Citrix Gateway 12.1-62.27 and later releases of 12.1 Citrix ADC and NetScaler Gateway 11.1-65.22 and later releases of 11.1 Citrix ADC 12.1-FIPS 12.1-55.247 and later releases of 12.1-FIPS Citrix SD-WAN WANOP Edition 11.4.0a and later releases of 11.4 Citrix SD-WAN WANOP Edition 11.3.2a and later releases of 11.3 Citrix SD-WAN WANOP Edition 11.2.3b and later releases of 11.2 Citrix SD-WAN WANOP Edition 10.2.9b and later releases of 10.2"
}
]
}
],
"source": "support@hackerone.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "92AEAC43-113D-456B-89C0-1872A67224AC",
"versionEndExcluding": "11.1-65.22",
"versionStartIncluding": "11.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "40FC22F7-EA37-48D7-822D-B66EE2B25FE2",
"versionEndExcluding": "12.1-62.27",
"versionStartIncluding": "12.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A1035921-397B-4E88-AF1A-DF581B75B4B2",
"versionEndExcluding": "13.0-82.45",
"versionStartIncluding": "13.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:citrix:application_delivery_controller:-:*:*:*:*:*:*:*",
"matchCriteriaId": "80E69E10-6F40-4FE4-9D84-F6C25EAB79D8",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8BEBCAD2-581F-4217-8425-46C03584E673",
"versionEndExcluding": "12.1-55.238",
"versionStartIncluding": "12.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:citrix:mpx\\/sdx_14030_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "BCB11BC1-0702-436F-BFE2-14B38B118D99",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx\\/sdx_14060_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "8569B182-D0A7-414B-B0A3-4DD2FAB44F69",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx\\/sdx_14080_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "ABB9B3E9-EED4-4D74-BE4C-DFAFAB1F0994",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_15030-50g_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F60729DF-EDC8-4462-ABD2-6E4199F22701",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_15040-50g_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "B789F02A-56CB-4871-9D9D-FAB0F31A72A1",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_15060-50g_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "06699186-E7E4-463C-8844-77B2A750B985",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_15080-50g_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F00DBEBF-29BE-4D6A-BF79-19208AAB0D7F",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_15100-50g_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "848169A6-CAD7-4E14-BC5D-B2E94DC93CCB",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_15120-50g_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "3C69709C-885A-4F19-899D-A7B5CE7066EF",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_8905_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "6B2136C1-8AB6-4C70-87F4-1F8A93A876C9",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_8910_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "492323D2-339D-404C-BB9B-E09ABB87FA2B",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:mpx_8920_fips:-:*:*:*:*:*:*:*",
"matchCriteriaId": "AB83185D-DD6F-47CD-B500-499F9EF65093",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4564E909-7F8E-40DF-B941-FFACC03B97B7",
"versionEndExcluding": "12.1-62.27",
"versionStartIncluding": "12.1",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:gateway:*:*:*:*:*:*:*:*",
"matchCriteriaId": "FB5357D6-4995-4966-8B63-11E636AD58BC",
"versionEndExcluding": "13.0-82.45",
"versionStartIncluding": "13.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:citrix:netscaler_gateway:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CE3B890B-5A0E-4B5A-A9E1-0C6DDF9524E6",
"versionEndExcluding": "11.1-65.22",
"versionStartIncluding": "11.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A9B222CD-3235-4153-97B0-D8F6FF1FB7BE",
"versionEndExcluding": "10.2.9.b",
"versionStartIncluding": "10.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:*",
"matchCriteriaId": "22226FCE-A3D3-4FAB-909A-7922AAC3035A",
"versionEndExcluding": "11.2.3.b",
"versionStartIncluding": "11.2",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:*",
"matchCriteriaId": "C0A54438-E0DA-4134-87FE-D7BFE30A3BAA",
"versionEndExcluding": "11.3.2.a",
"versionStartIncluding": "11.3",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:*",
"matchCriteriaId": "DB0A1FE7-9F5D-476E-A3E0-2B6260DE0366",
"versionEndExcluding": "11.4.0.a",
"versionStartIncluding": "11.4",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
},
{
"cpeMatch": [
{
"criteria": "cpe:2.3:h:citrix:4000-wo:-:*:*:*:*:*:*:*",
"matchCriteriaId": "25C848BC-98F7-41D4-A262-8B7EB304F4C1",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:4100-wo:-:*:*:*:*:*:*:*",
"matchCriteriaId": "F3979EFF-AE6E-4274-97E2-58C7E01C920E",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:5000-wo:-:*:*:*:*:*:*:*",
"matchCriteriaId": "C87AF39E-6BCF-4188-BAB1-A5CBDEBF662E",
"vulnerable": false
},
{
"criteria": "cpe:2.3:h:citrix:5100-wo:-:*:*:*:*:*:*:*",
"matchCriteriaId": "38514675-1C15-460C-B34C-2633A8A36A78",
"vulnerable": false
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN WANOP Edition models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could lead to the limited available disk space on the appliances being fully consumed."
},
{
"lang": "es",
"value": "Se ha detectado una vulnerabilidad en Citrix ADC (conocido anteriormente como NetScaler ADC) y Citrix Gateway (conocido anteriormente como NetScaler Gateway), y en los modelos 4000-WO, 4100-WO, 5000-WO y 5100-WO de Citrix SD-WAN WANOP Edition. Estas vulnerabilidades, si son explotadas, podr\u00edan conllevar a el consumo total del limitado espacio de disco disponible en los dispositivos"
}
],
"id": "CVE-2021-22919",
"lastModified": "2026-06-17T03:38:01.453",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2021-08-05T21:15:10.997",
"references": [
{
"source": "support@hackerone.com",
"tags": [
"Vendor Advisory"
],
"url": "https://support.citrix.com/article/CTX319135"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://support.citrix.com/article/CTX319135"
}
],
"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"source": "support@hackerone.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-770"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
Loading…
Loading…
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
Loading timeline…
Loading…
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.