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

CVE-2021-34577 (GCVE-0-2021-34577)

Vulnerability from cvelistv5 – Published: 2022-11-09 16:11 – Updated: 2025-05-01 19:16
VLAI
Title
Hardcoded credentials in Kaden PICOFLUX AiR
Summary
In the Kaden PICOFLUX AiR water meter an adversary can read the values through wireless M-Bus mode 5 with a hardcoded shared key while being adjacent to the device.
Severity
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-01 19:16 UTC
CWE
  • CWE-798 - Use of Hard-coded Credentials
Assigner
References
Impacted products
Vendor Product Version CPE status
Kaden PICOFLUX AiR Affected: all
guessed Create a notification for this product.
Date Public
2021-09-16 10:00
Credits
Libor POLČÁK reported to CERT@VDE
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T00:19:46.586Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34577"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-34577",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-01T19:16:21.657086Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-01T19:16:45.077Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "PICOFLUX AiR",
          "vendor": "Kaden",
          "versions": [
            {
              "status": "affected",
              "version": "all"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "user": "00000000-0000-4000-9000-000000000000",
          "value": "Libor POL\u010c\u00c1K reported to CERT@VDE"
        }
      ],
      "datePublic": "2021-09-16T10:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "In the Kaden PICOFLUX AiR water meter an adversary can read the values through wireless M-Bus mode 5 with a hardcoded shared key while being adjacent to the device."
            }
          ],
          "value": "In the Kaden PICOFLUX AiR water meter an adversary can read the values through wireless M-Bus mode 5 with a hardcoded shared key while being adjacent to the device."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-21",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-21 Exploitation of Trusted Credentials"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-798",
              "description": "CWE-798 Use of Hard-coded Credentials",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2022-11-09T16:11:03.018Z",
        "orgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
        "shortName": "CERTVDE"
      },
      "references": [
        {
          "url": "https://www.fit.vutbr.cz/~polcak/CVE-2021-34577"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Hardcoded credentials in Kaden PICOFLUX AiR",
      "x_generator": {
        "engine": "Vulnogram 0.1.0-dev"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "270ccfa6-a436-4e77-922e-914ec3a9685c",
    "assignerShortName": "CERTVDE",
    "cveId": "CVE-2021-34577",
    "datePublished": "2022-11-09T16:11:03.018Z",
    "dateReserved": "2021-06-10T19:19:08.025Z",
    "dateUpdated": "2025-05-01T19:16:45.077Z",
    "requesterUserId": "520cc88b-a1c8-44f6-9154-21a4d74c769f",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-34577",
      "date": "2026-09-16",
      "epss": "0.00276",
      "percentile": "0.20142"
    },
    "fkie_nvd": {
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:kadenvodomery:picoflux_air_firmware:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"E997A4A7-18BF-4D96-9BA4-693546CC9B89\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:h:kadenvodomery:picoflux_air:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"01C6CD16-D38E-4B3C-9FBF-BF017B41D021\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"In the Kaden PICOFLUX AiR water meter an adversary can read the values through wireless M-Bus mode 5 with a hardcoded shared key while being adjacent to the device.\"}, {\"lang\": \"es\", \"value\": \"En el medidor de agua Kaden PICOFLUX AiR, un adversario puede leer los valores a trav\\u00e9s del modo inal\\u00e1mbrico M-Bus 5 con una clave compartida codificada mientras se encuentra junto al dispositivo.\"}]",
      "id": "CVE-2021-34577",
      "lastModified": "2024-11-21T06:10:44.300",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"info@cert.vde.com\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"attackVector\": \"ADJACENT_NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"NONE\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 3.6}]}",
      "published": "2022-11-09T17:15:10.080",
      "references": "[{\"url\": \"https://www.fit.vutbr.cz/~polcak/CVE-2021-34577\", \"source\": \"info@cert.vde.com\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.fit.vutbr.cz/~polcak/CVE-2021-34577\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}]",
      "sourceIdentifier": "info@cert.vde.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"info@cert.vde.com\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-798\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-34577\",\"sourceIdentifier\":\"info@cert.vde.com\",\"published\":\"2022-11-09T17:15:10.080\",\"lastModified\":\"2024-11-21T06:10:44.300\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Kaden PICOFLUX AiR water meter an adversary can read the values through wireless M-Bus mode 5 with a hardcoded shared key while being adjacent to the device.\"},{\"lang\":\"es\",\"value\":\"En el medidor de agua Kaden PICOFLUX AiR, un adversario puede leer los valores a trav\u00e9s del modo inal\u00e1mbrico M-Bus 5 con una clave compartida codificada mientras se encuentra junto al dispositivo.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"info@cert.vde.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"info@cert.vde.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-798\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:kadenvodomery:picoflux_air_firmware:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E997A4A7-18BF-4D96-9BA4-693546CC9B89\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:h:kadenvodomery:picoflux_air:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"01C6CD16-D38E-4B3C-9FBF-BF017B41D021\"}]}]}],\"references\":[{\"url\":\"https://www.fit.vutbr.cz/~polcak/CVE-2021-34577\",\"source\":\"info@cert.vde.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.fit.vutbr.cz/~polcak/CVE-2021-34577\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "current_release_date": "2025-05-29T04:08:02+00:00",
      "cve": "CVE-2021-34577",
      "id": "CVE-2021-34577",
      "initial_release_date": "2021-09-16T10:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "Hardcoded credentials in Kaden PICOFLUX AiR",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-34577.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://www.fit.vutbr.cz/~polcak/CVE-2021-34577\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T00:19:46.586Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-34577\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-05-01T19:16:21.657086Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-05-01T19:16:40.357Z\"}}], \"cna\": {\"title\": \"Hardcoded credentials in Kaden PICOFLUX AiR\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"user\": \"00000000-0000-4000-9000-000000000000\", \"value\": \"Libor POL\\u010c\\u00c1K reported to CERT@VDE\"}], \"impacts\": [{\"capecId\": \"CAPEC-21\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-21 Exploitation of Trusted Credentials\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Kaden\", \"product\": \"PICOFLUX AiR\", \"versions\": [{\"status\": \"affected\", \"version\": \"all\"}], \"defaultStatus\": \"affected\"}], \"datePublic\": \"2021-09-16T10:00:00.000Z\", \"references\": [{\"url\": \"https://www.fit.vutbr.cz/~polcak/CVE-2021-34577\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Kaden PICOFLUX AiR water meter an adversary can read the values through wireless M-Bus mode 5 with a hardcoded shared key while being adjacent to the device.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"In the Kaden PICOFLUX AiR water meter an adversary can read the values through wireless M-Bus mode 5 with a hardcoded shared key while being adjacent to the device.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-798\", \"description\": \"CWE-798 Use of Hard-coded Credentials\"}]}], \"providerMetadata\": {\"orgId\": \"270ccfa6-a436-4e77-922e-914ec3a9685c\", \"shortName\": \"CERTVDE\", \"dateUpdated\": \"2022-11-09T16:11:03.018Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-34577\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-01T19:16:45.077Z\", \"dateReserved\": \"2021-06-10T19:19:08.025Z\", \"assignerOrgId\": \"270ccfa6-a436-4e77-922e-914ec3a9685c\", \"datePublished\": \"2022-11-09T16:11:03.018Z\", \"requesterUserId\": \"520cc88b-a1c8-44f6-9154-21a4d74c769f\", \"assignerShortName\": \"CERTVDE\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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.