CVE-2021-45035 (GCVE-0-2021-45035)
Vulnerability from cvelistv5 – Published: 2022-09-23 15:02 – Updated: 2025-05-22 18:24
VLAI
EPSS
VEX
Title
Velneo vClient Improper authentication
Summary
Velneo vClient on its 28.1.3 version, does not correctly check the certificate of authenticity by default. This could allow an attacker that has access to the network to perform a MITM attack in order to obtain the user´s credentials.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-22 15:44 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.incibe-cert.es/en/early-warning/secur… | x_refsource_CONFIRM |
| https://velneo.es/publicacion-de-incidencia-de-se… | x_refsource_CONFIRM |
| https://www.velneo.com/blog/nueva-revision-velneo-29-2 | x_refsource_MISC |
| https://doc.velneo.com/v/29/velneo/notas-de-la-ve… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Velneo | Velneo vClient |
Affected:
28.1.3
|
guessed |
Date Public
2022-09-16 00:00
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T04:32:13.611Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.velneo.com/blog/nueva-revision-velneo-29-2"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-45035",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-22T15:44:57.452184Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-05-22T18:24:43.357Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Velneo vClient",
"vendor": "Velneo",
"versions": [
{
"status": "affected",
"version": "28.1.3"
}
]
}
],
"datePublic": "2022-09-16T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Velneo vClient on its 28.1.3 version, does not correctly check the certificate of authenticity by default. This could allow an attacker that has access to the network to perform a MITM attack in order to obtain the user\u00b4s credentials."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "CWE-287 Improper Authentication",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-09-28T19:36:39.000Z",
"orgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516",
"shortName": "INCIBE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.velneo.com/blog/nueva-revision-velneo-29-2"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados"
}
],
"solutions": [
{
"lang": "en",
"value": "This vulnerability has been fixed by Velneo team in the 29.2 version, released on 29/06/2021."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Velneo vClient Improper authentication",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "cve-coordination@incibe.es",
"DATE_PUBLIC": "2022-09-16T08:00:00.000Z",
"ID": "CVE-2021-45035",
"STATE": "PUBLIC",
"TITLE": "Velneo vClient Improper authentication"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Velneo vClient",
"version": {
"version_data": [
{
"version_affected": "=",
"version_name": "28.1.3",
"version_value": "28.1.3"
}
]
}
}
]
},
"vendor_name": "Velneo"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Velneo vClient on its 28.1.3 version, does not correctly check the certificate of authenticity by default. This could allow an attacker that has access to the network to perform a MITM attack in order to obtain the user\u00b4s credentials."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-287 Improper Authentication"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication",
"refsource": "CONFIRM",
"url": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication"
},
{
"name": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/",
"refsource": "CONFIRM",
"url": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/"
},
{
"name": "https://www.velneo.com/blog/nueva-revision-velneo-29-2",
"refsource": "MISC",
"url": "https://www.velneo.com/blog/nueva-revision-velneo-29-2"
},
{
"name": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados",
"refsource": "MISC",
"url": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados"
}
]
},
"solution": [
{
"lang": "en",
"value": "This vulnerability has been fixed by Velneo team in the 29.2 version, released on 29/06/2021."
}
],
"source": {
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516",
"assignerShortName": "INCIBE",
"cveId": "CVE-2021-45035",
"datePublished": "2022-09-23T15:02:18.737Z",
"dateReserved": "2021-12-13T00:00:00.000Z",
"dateUpdated": "2025-05-22T18:24:43.357Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-45035",
"date": "2026-10-15",
"epss": "0.00464",
"percentile": "0.38701"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "Velneo vClient",
"vendor": "Velneo",
"versions": [
{
"status": "affected",
"version": "28.1.3"
}
]
}
],
"source": "cve-coordination@incibe.es"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:velneo:vclient:28.1.3:*:*:*:*:*:*:*",
"matchCriteriaId": "2802675E-9543-403C-95FF-3CFF1FC01896",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Velneo vClient on its 28.1.3 version, does not correctly check the certificate of authenticity by default. This could allow an attacker that has access to the network to perform a MITM attack in order to obtain the user\u00b4s credentials."
},
{
"lang": "es",
"value": "Velneo vClient en versi\u00f3n 28.1.3, no comprueba correctamente el certificado de autenticidad por defecto. Esto podr\u00eda permitir a un atacante que tenga acceso a la red llevar a cabo un ataque de tipo MITM para obtener las credenciales del usuario."
}
],
"id": "CVE-2021-45035",
"lastModified": "2026-06-17T04:13:04.550",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.1,
"impactScore": 4.2,
"source": "cve-coordination@incibe.es",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2021-45035",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-22T15:44:57.452184Z",
"version": "2.0.3"
}
}
]
},
"published": "2022-09-23T16:15:10.380",
"references": [
{
"source": "cve-coordination@incibe.es",
"tags": [
"Vendor Advisory"
],
"url": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados"
},
{
"source": "cve-coordination@incibe.es",
"tags": [
"Vendor Advisory"
],
"url": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/"
},
{
"source": "cve-coordination@incibe.es",
"tags": [
"Third Party Advisory"
],
"url": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication"
},
{
"source": "cve-coordination@incibe.es",
"tags": [
"Vendor Advisory"
],
"url": "https://www.velneo.com/blog/nueva-revision-velneo-29-2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://www.velneo.com/blog/nueva-revision-velneo-29-2"
}
],
"sourceIdentifier": "cve-coordination@incibe.es",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "cve-coordination@incibe.es",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-295"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2025-05-29T04:56:00+00:00",
"cve": "CVE-2021-45035",
"id": "CVE-2021-45035",
"initial_release_date": "2021-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Velneo vClient Improper authentication",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-45035.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T04:32:13.611Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://www.velneo.com/blog/nueva-revision-velneo-29-2"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-45035",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-22T15:44:57.452184Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2025-05-22T15:46:31.695Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Velneo vClient",
"vendor": "Velneo",
"versions": [
{
"status": "affected",
"version": "28.1.3"
}
]
}
],
"datePublic": "2022-09-16T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "Velneo vClient on its 28.1.3 version, does not correctly check the certificate of authenticity by default. This could allow an attacker that has access to the network to perform a MITM attack in order to obtain the user\u00b4s credentials."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-287",
"description": "CWE-287 Improper Authentication",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-09-28T19:36:39.000Z",
"orgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516",
"shortName": "INCIBE"
},
"references": [
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://www.velneo.com/blog/nueva-revision-velneo-29-2"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados"
}
],
"solutions": [
{
"lang": "en",
"value": "This vulnerability has been fixed by Velneo team in the 29.2 version, released on 29/06/2021."
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Velneo vClient Improper authentication",
"x_generator": {
"engine": "Vulnogram 0.0.9"
},
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "cve-coordination@incibe.es",
"DATE_PUBLIC": "2022-09-16T08:00:00.000Z",
"ID": "CVE-2021-45035",
"STATE": "PUBLIC",
"TITLE": "Velneo vClient Improper authentication"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Velneo vClient",
"version": {
"version_data": [
{
"version_affected": "=",
"version_name": "28.1.3",
"version_value": "28.1.3"
}
]
}
}
]
},
"vendor_name": "Velneo"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Velneo vClient on its 28.1.3 version, does not correctly check the certificate of authenticity by default. This could allow an attacker that has access to the network to perform a MITM attack in order to obtain the user\u00b4s credentials."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-287 Improper Authentication"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication",
"refsource": "CONFIRM",
"url": "https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication"
},
{
"name": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/",
"refsource": "CONFIRM",
"url": "https://velneo.es/publicacion-de-incidencia-de-seguridad-en-cve-cve-2021-45035/"
},
{
"name": "https://www.velneo.com/blog/nueva-revision-velneo-29-2",
"refsource": "MISC",
"url": "https://www.velneo.com/blog/nueva-revision-velneo-29-2"
},
{
"name": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados",
"refsource": "MISC",
"url": "https://doc.velneo.com/v/29/velneo/notas-de-la-version#verificacion-de-certificados"
}
]
},
"solution": [
{
"lang": "en",
"value": "This vulnerability has been fixed by Velneo team in the 29.2 version, released on 29/06/2021."
}
],
"source": {
"discovery": "EXTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "0cbda920-cd7f-484a-8e76-bf7f4b7f4516",
"assignerShortName": "INCIBE",
"cveId": "CVE-2021-45035",
"datePublished": "2022-09-23T15:02:18.737Z",
"dateReserved": "2021-12-13T00:00:00.000Z",
"dateUpdated": "2025-05-22T18:24:43.357Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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.