GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2022-24043 (GCVE-0-2022-24043)

Vulnerability from cvelistv5 – Published: 2022-05-10 09:46 – Updated: 2024-08-03 03:59
VLAI
Summary
A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.142.5-22), Desigo PXC3 (All versions < V01.21.142.4-18), Desigo PXC4 (All versions < V02.20.142.10-10884), Desigo PXC5 (All versions < V02.20.142.10-10884). The login functionality of the application fails to normalize the response times of login attempts performed with wrong usernames with the ones executed with correct usernames. A remote unauthenticated attacker could exploit this side-channel information to perform a username enumeration attack and identify valid usernames.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Siemens Desigo DXR2 Affected: All versions < V01.21.142.5-22
guessed Create a notification for this product.
Siemens Desigo PXC3 Affected: All versions < V01.21.142.4-18
guessed Create a notification for this product.
Siemens Desigo PXC4 Affected: All versions < V02.20.142.10-10884
guessed Create a notification for this product.
Siemens Desigo PXC5 Affected: All versions < V02.20.142.10-10884
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T03:59:23.653Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-626968.pdf"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Desigo DXR2",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V01.21.142.5-22"
            }
          ]
        },
        {
          "product": "Desigo PXC3",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V01.21.142.4-18"
            }
          ]
        },
        {
          "product": "Desigo PXC4",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V02.20.142.10-10884"
            }
          ]
        },
        {
          "product": "Desigo PXC5",
          "vendor": "Siemens",
          "versions": [
            {
              "status": "affected",
              "version": "All versions \u003c V02.20.142.10-10884"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been identified in Desigo DXR2 (All versions \u003c V01.21.142.5-22), Desigo PXC3 (All versions \u003c V01.21.142.4-18), Desigo PXC4 (All versions \u003c V02.20.142.10-10884), Desigo PXC5 (All versions \u003c V02.20.142.10-10884). The login functionality of the application fails to normalize the response times of login attempts performed with wrong usernames with the ones executed with correct usernames. A remote unauthenticated attacker could exploit this side-channel information to perform a username enumeration attack and identify valid usernames."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-203",
              "description": "CWE-203: Observable Discrepancy",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-06-14T09:21:33.000Z",
        "orgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
        "shortName": "siemens"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-626968.pdf"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "productcert@siemens.com",
          "ID": "CVE-2022-24043",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Desigo DXR2",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V01.21.142.5-22"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC3",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V01.21.142.4-18"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC4",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V02.20.142.10-10884"
                          }
                        ]
                      }
                    },
                    {
                      "product_name": "Desigo PXC5",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "All versions \u003c V02.20.142.10-10884"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Siemens"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A vulnerability has been identified in Desigo DXR2 (All versions \u003c V01.21.142.5-22), Desigo PXC3 (All versions \u003c V01.21.142.4-18), Desigo PXC4 (All versions \u003c V02.20.142.10-10884), Desigo PXC5 (All versions \u003c V02.20.142.10-10884). The login functionality of the application fails to normalize the response times of login attempts performed with wrong usernames with the ones executed with correct usernames. A remote unauthenticated attacker could exploit this side-channel information to perform a username enumeration attack and identify valid usernames."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-203: Observable Discrepancy"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-626968.pdf",
              "refsource": "MISC",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-626968.pdf"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "cec7a2ec-15b4-4faf-bd53-b40f371f3a77",
    "assignerShortName": "siemens",
    "cveId": "CVE-2022-24043",
    "datePublished": "2022-05-10T09:46:53.000Z",
    "dateReserved": "2022-01-27T00:00:00.000Z",
    "dateUpdated": "2024-08-03T03:59:23.653Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2022-24043",
      "date": "2026-09-15",
      "epss": "0.01067",
      "percentile": "0.62955"
    },
    "fkie_nvd": {
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:siemens:desigo_dxr2_firmware:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"01.21.142.5-22\", \"matchCriteriaId\": \"5B50EDDC-4B68-416E-B8BE-58399A90FE44\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:siemens:desigo_dxr2:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"21EDDCD7-3B64-410E-A294-0F5F65849F4E\"}]}]}, {\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:siemens:desigo_pxc3_firmware:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"01.21.142.4-18\", \"matchCriteriaId\": \"D7ABEE98-3FF4-4E7C-B1CD-0E5E56E437FF\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:siemens:desigo_pxc3:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"373009ED-3AE4-4F0B-940D-8E82668C3FF3\"}]}]}, {\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:siemens:desigo_pxc4_firmware:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"02.20.142.10-10884\", \"matchCriteriaId\": \"84D6AF5F-AD6D-4A30-9D72-31A3BA2A5DC3\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:siemens:desigo_pxc4:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"0327220F-B5E6-4722-AEB2-BC4C21F1060D\"}]}]}, {\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:siemens:desigo_pxc5_firmware:*:*:*:*:*:*:*:*\", \"versionEndExcluding\": \"02.20.142.10-10884\", \"matchCriteriaId\": \"7B710014-DE57-43C2-9BFE-A4F8AF6542D5\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:siemens:desigo_pxc5:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"C4E2A7F6-B6E5-4230-8F13-64745C434A71\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A vulnerability has been identified in Desigo DXR2 (All versions \u003c V01.21.142.5-22), Desigo PXC3 (All versions \u003c V01.21.142.4-18), Desigo PXC4 (All versions \u003c V02.20.142.10-10884), Desigo PXC5 (All versions \u003c V02.20.142.10-10884). The login functionality of the application fails to normalize the response times of login attempts performed with wrong usernames with the ones executed with correct usernames. A remote unauthenticated attacker could exploit this side-channel information to perform a username enumeration attack and identify valid usernames.\"}, {\"lang\": \"es\", \"value\": \"Se ha identificado una vulnerabilidad en Desigo DXR2 (Todas las versiones anteriores a V01.21.142.5-22), Desigo PXC3 (Todas las versiones anteriores a V01.21.142.4-18), Desigo PXC4 (Todas las versiones anteriores a V02.20.142.10-10884), Desigo PXC5 (Todas las versiones anteriores a V02.20.142.10-10884). La funcionalidad de inicio de sesi\\u00f3n de la aplicaci\\u00f3n falla al normalizar los tiempos de respuesta de los intentos de inicio de sesi\\u00f3n llevados a cabo con nombres de usuario err\\u00f3neos con los ejecutados con nombres de usuario correctos. Un atacante remoto no autenticado podr\\u00eda explotar esta informaci\\u00f3n del canal lateral para llevar a cabo un ataque de enumeraci\\u00f3n de nombres de usuario e identificar nombres de usuario v\\u00e1lidos\"}]",
      "id": "CVE-2022-24043",
      "lastModified": "2024-11-21T06:49:43.153",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\", \"baseScore\": 5.3, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"LOW\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 1.4}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:L/Au:N/C:P/I:N/A:N\", \"baseScore\": 5.0, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 10.0, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2022-05-20T13:15:14.483",
      "references": "[{\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-626968.pdf\", \"source\": \"productcert@siemens.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://cert-portal.siemens.com/productcert/pdf/ssa-626968.pdf\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "productcert@siemens.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"productcert@siemens.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-203\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-203\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2022-24043\",\"sourceIdentifier\":\"productcert@siemens.com\",\"published\":\"2022-05-20T13:15:14.483\",\"lastModified\":\"2026-06-17T04:31:12.347\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability has been identified in Desigo DXR2 (All versions \u003c V01.21.142.5-22), Desigo PXC3 (All versions \u003c V01.21.142.4-18), Desigo PXC4 (All versions \u003c V02.20.142.10-10884), Desigo PXC5 (All versions \u003c V02.20.142.10-10884). The login functionality of the application fails to normalize the response times of login attempts performed with wrong usernames with the ones executed with correct usernames. A remote unauthenticated attacker could exploit this side-channel information to perform a username enumeration attack and identify valid usernames.\"},{\"lang\":\"es\",\"value\":\"Se ha identificado una vulnerabilidad en Desigo DXR2 (Todas las versiones anteriores a V01.21.142.5-22), Desigo PXC3 (Todas las versiones anteriores a V01.21.142.4-18), Desigo PXC4 (Todas las versiones anteriores a V02.20.142.10-10884), Desigo PXC5 (Todas las versiones anteriores a V02.20.142.10-10884). La funcionalidad de inicio de sesi\u00f3n de la aplicaci\u00f3n falla al normalizar los tiempos de respuesta de los intentos de inicio de sesi\u00f3n llevados a cabo con nombres de usuario err\u00f3neos con los ejecutados con nombres de usuario correctos. Un atacante remoto no autenticado podr\u00eda explotar esta informaci\u00f3n del canal lateral para llevar a cabo un ataque de enumeraci\u00f3n de nombres de usuario e identificar nombres de usuario v\u00e1lidos\"}],\"affected\":[{\"source\":\"productcert@siemens.com\",\"affectedData\":[{\"vendor\":\"Siemens\",\"product\":\"Desigo DXR2\",\"versions\":[{\"version\":\"All versions \u003c V01.21.142.5-22\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"Desigo PXC3\",\"versions\":[{\"version\":\"All versions \u003c V01.21.142.4-18\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"Desigo PXC4\",\"versions\":[{\"version\":\"All versions \u003c V02.20.142.10-10884\",\"status\":\"affected\"}]},{\"vendor\":\"Siemens\",\"product\":\"Desigo PXC5\",\"versions\":[{\"version\":\"All versions \u003c V02.20.142.10-10884\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:N/A:N\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"productcert@siemens.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-203\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:desigo_dxr2_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"01.21.142.5-22\",\"matchCriteriaId\":\"5B50EDDC-4B68-416E-B8BE-58399A90FE44\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:desigo_dxr2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"21EDDCD7-3B64-410E-A294-0F5F65849F4E\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:desigo_pxc3_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"01.21.142.4-18\",\"matchCriteriaId\":\"D7ABEE98-3FF4-4E7C-B1CD-0E5E56E437FF\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:desigo_pxc3:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"373009ED-3AE4-4F0B-940D-8E82668C3FF3\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:desigo_pxc4_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"02.20.142.10-10884\",\"matchCriteriaId\":\"84D6AF5F-AD6D-4A30-9D72-31A3BA2A5DC3\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:desigo_pxc4:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0327220F-B5E6-4722-AEB2-BC4C21F1060D\"}]}]},{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:siemens:desigo_pxc5_firmware:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"02.20.142.10-10884\",\"matchCriteriaId\":\"7B710014-DE57-43C2-9BFE-A4F8AF6542D5\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:siemens:desigo_pxc5:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C4E2A7F6-B6E5-4230-8F13-64745C434A71\"}]}]}],\"references\":[{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-626968.pdf\",\"source\":\"productcert@siemens.com\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://cert-portal.siemens.com/productcert/pdf/ssa-626968.pdf\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2026-03-27T12:46:43+00:00",
      "cve": "CVE-2022-24043",
      "id": "CVE-2022-24043",
      "initial_release_date": "2022-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2022-24043",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-24043.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.