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CVE-2021-37196

Status: ModifiedMedium (6.5)—

A vulnerability has been identified in COMOS V10.2 (All versions only if web components are used), COMOS V10.3 (All versions < V10.3.3.3 only if web components are used), COMOS V10.3 (All versions >= V10.3.3.3 only if web components are used), COMOS V10.4 (All versions < V10.4.1 only if web components are used). The COMOS Web component of COMOS unpacks specially crafted archive files to relative paths. This vulnerability could allow an attacker to store files in any folder accessible by the COMOS Web webservice.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Siemens — Comos

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-37196",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "productcert@siemens.com",
      "affectedData": [
        {
          "vendor": "Siemens",
          "product": "COMOS V10.2",
          "versions": [
            {
              "status": "affected",
              "version": "All versions only if web components are used"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "COMOS V10.3",
          "versions": [
            {
              "status": "affected",
              "version": "All versions < V10.3.3.3 only if web components are used"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "COMOS V10.3",
          "versions": [
            {
              "status": "affected",
              "version": "All versions >= V10.3.3.3 only if web components are used"
            }
          ]
        },
        {
          "vendor": "Siemens",
          "product": "COMOS V10.4",
          "versions": [
            {
              "status": "affected",
              "version": "All versions < V10.4.1 only if web components are used"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-01-11T12:15:09.880",
  "references": [
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-995338.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "productcert@siemens.com"
    },
    {
      "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-995338.pdf",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "productcert@siemens.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-23"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been identified in COMOS V10.2 (All versions only if web components are used), COMOS V10.3 (All versions < V10.3.3.3 only if web components are used), COMOS V10.3 (All versions >= V10.3.3.3 only if web components are used), COMOS V10.4 (All versions < V10.4.1 only if web components are used). The COMOS Web component of COMOS unpacks specially crafted archive files to relative paths. This vulnerability could allow an attacker to store files in any folder accessible by the COMOS Web webservice."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad en COMOS V10.2 (Todas las versiones sólo si se utilizan componentes web), COMOS V10.3 (Todas las versiones anteriores a V10.3.3 sólo si se utilizan componentes web), COMOS V10.3 (Todas las versiones posteriores o iguales a V10.3.3 sólo si se utilizan componentes web), COMOS V10.4 (Todas las versiones anteriores a V10.4.1 sólo si se utilizan componentes web). El componente COMOS Web de COMOS desempaqueta archivos comprimidos especialmente diseñados en rutas relativas. Esta vulnerabilidad podría permitir a un atacante almacenar archivos en cualquier carpeta accesible por el servicio web de COMOS"
    }
  ],
  "lastModified": "2026-06-17T04:00:14.687",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "28970CC4-B11E-4B5A-88D2-CA6528CAB36A",
              "versionEndIncluding": "10.2"
            },
            {
              "criteria": "cpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F4E2BA1A-7CCB-4785-82A3-27E21B83B0AB",
              "versionEndExcluding": "10.3.3.3",
              "versionStartIncluding": "10.3"
            },
            {
              "criteria": "cpe:2.3:a:siemens:comos:10.4:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BDF6D202-6CF1-4B97-8386-AC05DBA41C5F"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "productcert@siemens.com"
}