CVE-2026-2815 (GCVE-0-2026-2815)
Vulnerability from cvelistv5
Published
2026-06-25 13:27
Modified
2026-06-25 14:03
CWE
  • CWE-339 - Small seed space in PRNG
Summary
Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys
Impacted products
Vendor Product Version
Silicon Labs SiSDK Version: 0    2025.12.1
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-2815",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-25T14:03:39.954725Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-25T14:03:49.129Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "SiSDK",
          "vendor": "Silicon Labs",
          "versions": [
            {
              "lessThanOrEqual": "2025.12.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys"
            }
          ],
          "value": "Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-112",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-112 Brute Force"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "ADJACENT",
            "baseScore": 8.4,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-339",
              "description": "CWE-339 Small seed space in PRNG",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T13:27:45.446Z",
        "orgId": "030b2754-1501-44a4-bef8-48be86a33bf4",
        "shortName": "Silabs"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "permissions-required"
          ],
          "url": "https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000kDYsfIAG?operationContext=S1"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/SiliconLabsSoftware/sisdk-release"
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys",
      "x_generator": {
        "engine": "Vulnogram 1.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "030b2754-1501-44a4-bef8-48be86a33bf4",
    "assignerShortName": "Silabs",
    "cveId": "CVE-2026-2815",
    "datePublished": "2026-06-25T13:27:45.446Z",
    "dateReserved": "2026-02-19T16:49:32.148Z",
    "dateUpdated": "2026-06-25T14:03:49.129Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-2815\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-25T14:03:39.954725Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-25T14:03:44.190Z\"}}], \"cna\": {\"title\": \"Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys\", \"source\": {\"discovery\": \"INTERNAL\"}, \"impacts\": [{\"capecId\": \"CAPEC-112\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-112 Brute Force\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 8.4, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"ADJACENT\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"HIGH\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"HIGH\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Silicon Labs\", \"product\": \"SiSDK\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"2025.12.1\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000kDYsfIAG?operationContext=S1\", \"tags\": [\"vendor-advisory\", \"permissions-required\"]}, {\"url\": \"https://github.com/SiliconLabsSoftware/sisdk-release\", \"tags\": [\"patch\"]}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.1\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Incorrect use of the PUF key for user key generation in EFR32xG27 results in predictable keys\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-339\", \"description\": \"CWE-339 Small seed space in PRNG\"}]}], \"providerMetadata\": {\"orgId\": \"030b2754-1501-44a4-bef8-48be86a33bf4\", \"shortName\": \"Silabs\", \"dateUpdated\": \"2026-06-25T13:27:45.446Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-2815\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-25T14:03:49.129Z\", \"dateReserved\": \"2026-02-19T16:49:32.148Z\", \"assignerOrgId\": \"030b2754-1501-44a4-bef8-48be86a33bf4\", \"datePublished\": \"2026-06-25T13:27:45.446Z\", \"assignerShortName\": \"Silabs\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


Loading…

Loading…