CVE-2025-1221 (GCVE-0-2025-1221)

Vulnerability from cvelistv5 – Published: 2025-07-30 08:09 – Updated: 2025-07-30 13:40
VLAI?
Summary
A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation
Severity ?
5.9 (Medium)
CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE
Assigner
References
Impacted products
Vendor Product Version
silabs.com Zigbee Affected: 0 , ≤ 4.3.3 (semver)
Affected: 4.4.3 (semver)
Create a notification for this product.
    silabs.com Zigbee Affected: 0 , ≤ 2024.6.1 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-1221",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-07-30T13:40:11.968497Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-07-30T13:40:39.039Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageName": "GSDK",
          "product": "Zigbee",
          "repo": "https://github.com/SiliconLabs/gecko_sdk",
          "vendor": "silabs.com",
          "versions": [
            {
              "lessThanOrEqual": "4.3.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.4.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "packageName": "SiSDK",
          "product": "Zigbee",
          "repo": "https://github.com/SiliconLabs/simplicity_sdk",
          "vendor": "silabs.com",
          "versions": [
            {
              "lessThanOrEqual": "2024.6.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation\u003cbr\u003e"
            }
          ],
          "value": "A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation"
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-26",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-26 Leveraging Race Conditions"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "ADJACENT",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-667",
              "description": "CWE-667 Improper Locking",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-30T08:09:19.214Z",
        "orgId": "030b2754-1501-44a4-bef8-48be86a33bf4",
        "shortName": "Silabs"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-7.4.4.0.pdf"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.0.2.0.pdf"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.1.0.0.pdf"
        },
        {
          "tags": [
            "vendor-advisory",
            "permissions-required"
          ],
          "url": "https://community.silabs.com/068Vm00000Sadyn"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "DoS in Zigbee device due to heavy traffic",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "030b2754-1501-44a4-bef8-48be86a33bf4",
    "assignerShortName": "Silabs",
    "cveId": "CVE-2025-1221",
    "datePublished": "2025-07-30T08:09:19.214Z",
    "dateReserved": "2025-02-11T05:43:30.180Z",
    "dateUpdated": "2025-07-30T13:40:39.039Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-1221\",\"sourceIdentifier\":\"product-security@silabs.com\",\"published\":\"2025-07-30T08:15:33.133\",\"lastModified\":\"2025-07-31T18:42:37.870\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation\"},{\"lang\":\"es\",\"value\":\"Un Zigbee Radio Co-Processor (RCP), que utilice SiLabs EmberZNet Zigbee stack, no pudo enviar mensajes al sistema host (CPCd) debido al intenso tr\u00e1fico Zigbee, lo que result\u00f3 en un ataque de denegaci\u00f3n de servicio (DoS). Solo un reinicio completo har\u00e1 que el dispositivo vuelva a funcionar normalmente.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"product-security@silabs.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":5.9,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"PRESENT\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"HIGH\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}]},\"weaknesses\":[{\"source\":\"product-security@silabs.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"references\":[{\"url\":\"https://community.silabs.com/068Vm00000Sadyn\",\"source\":\"product-security@silabs.com\"},{\"url\":\"https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-7.4.4.0.pdf\",\"source\":\"product-security@silabs.com\"},{\"url\":\"https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.0.2.0.pdf\",\"source\":\"product-security@silabs.com\"},{\"url\":\"https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.1.0.0.pdf\",\"source\":\"product-security@silabs.com\"}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"affected\": [{\"defaultStatus\": \"unaffected\", \"packageName\": \"GSDK\", \"product\": \"Zigbee\", \"repo\": \"https://github.com/SiliconLabs/gecko_sdk\", \"vendor\": \"silabs.com\", \"versions\": [{\"lessThanOrEqual\": \"4.3.3\", \"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"4.4.3\", \"versionType\": \"semver\"}]}, {\"defaultStatus\": \"unaffected\", \"packageName\": \"SiSDK\", \"product\": \"Zigbee\", \"repo\": \"https://github.com/SiliconLabs/simplicity_sdk\", \"vendor\": \"silabs.com\", \"versions\": [{\"lessThanOrEqual\": \"2024.6.1\", \"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\"}]}], \"descriptions\": [{\"lang\": \"en\", \"supportingMedia\": [{\"base64\": false, \"type\": \"text/html\", \"value\": \"A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation\u003cbr\u003e\"}], \"value\": \"A Zigbee Radio Co-Processor (RCP), which is using SiLabs EmberZNet Zigbee stack, was unable to send messages to the host system (CPCd) due to heavy Zigbee traffic, resulting in a Denial of Service (DoS) attack, Only hard reset will bring the device to normal operation\"}], \"impacts\": [{\"capecId\": \"CAPEC-26\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-26 Leveraging Race Conditions\"}]}], \"metrics\": [{\"cvssV4_0\": {\"Automatable\": \"NOT_DEFINED\", \"Recovery\": \"NOT_DEFINED\", \"Safety\": \"NOT_DEFINED\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"attackVector\": \"ADJACENT\", \"baseScore\": 5.9, \"baseSeverity\": \"MEDIUM\", \"privilegesRequired\": \"LOW\", \"providerUrgency\": \"NOT_DEFINED\", \"subAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N\", \"version\": \"4.0\", \"vulnAvailabilityImpact\": \"HIGH\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"format\": \"CVSS\", \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"problemTypes\": [{\"descriptions\": [{\"cweId\": \"CWE-667\", \"description\": \"CWE-667 Improper Locking\", \"lang\": \"en\", \"type\": \"CWE\"}]}], \"providerMetadata\": {\"orgId\": \"030b2754-1501-44a4-bef8-48be86a33bf4\", \"shortName\": \"Silabs\", \"dateUpdated\": \"2025-07-30T08:09:19.214Z\"}, \"references\": [{\"tags\": [\"release-notes\"], \"url\": \"https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-7.4.4.0.pdf\"}, {\"tags\": [\"release-notes\"], \"url\": \"https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.0.2.0.pdf\"}, {\"tags\": [\"release-notes\"], \"url\": \"https://www.silabs.com/documents/public/release-notes/emberznet-release-notes-8.1.0.0.pdf\"}, {\"tags\": [\"vendor-advisory\", \"permissions-required\"], \"url\": \"https://community.silabs.com/068Vm00000Sadyn\"}], \"source\": {\"discovery\": \"UNKNOWN\"}, \"title\": \"DoS in Zigbee device due to heavy traffic\", \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-1221\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-07-30T13:40:11.968497Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-07-30T13:40:33.353Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-1221\", \"assignerOrgId\": \"030b2754-1501-44a4-bef8-48be86a33bf4\", \"state\": \"PUBLISHED\", \"assignerShortName\": \"Silabs\", \"dateReserved\": \"2025-02-11T05:43:30.180Z\", \"datePublished\": \"2025-07-30T08:09:19.214Z\", \"dateUpdated\": \"2025-07-30T13:40:39.039Z\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.