{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5706", "assignerOrgId": "030b2754-1501-44a4-bef8-48be86a33bf4", "state": "PUBLISHED", "assignerShortName": "Silabs", "dateReserved": "2026-04-06T15:58:09.629Z", "datePublished": "2026-08-27T22:13:56.225Z", "dateUpdated": "2026-08-27T22:13:56.225Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "030b2754-1501-44a4-bef8-48be86a33bf4", "shortName": "Silabs", "dateUpdated": "2026-08-27T22:13:56.225Z"}, "title": "Buffer overflow in Bluetooth Mesh SDK when handling extended advertisements", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-130", "description": "CWE-130: Improper Handling of Length Parameter Inconsistency, CWE-787: Out-of-bounds Write", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-8", "descriptions": [{"lang": "en", "value": "CAPEC-8: Buffer Overflow in an API Call"}]}], "affected": [{"vendor": "Silicon Labs", "product": "BT Mesh SDK", "packageName": "BT Mesh SDK", "repo": "https://github.com/SiliconLabs/simplicity_sdk", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "6.1.4, 9.1.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "In Bluetooth Mesh SDK 6.1.4 and earlier, malformed extended advertisements can trigger out-of-bounds writes leading to stack corruption and remote code execution. These messages must come from a device that has already joined the network. Only provisioners supporting extended advertisements may be impacted.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "In Bluetooth Mesh SDK 6.1.4 and earlier, malformed extended advertisements can trigger out-of-bounds writes leading to stack corruption and remote code execution. These messages must come from a device that has already joined the network. Only provisioners supporting extended advertisements may be impacted."}]}], "references": [{"url": "https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/a45Vm000000Et6HIAS?operationContext=S1", "tags": ["vendor-advisory", "permissions-required"]}, {"url": "https://github.com/SiliconLabs/gecko_sdk/releases", "tags": ["patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "LOW", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "LOW", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "HIGH", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.9, "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:H"}}], "source": {"discovery": "INTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "BT Mesh SDK", "product": "BT Mesh SDK", "repo": "https://github.com/SiliconLabs/simplicity_sdk", "vendor": "Silicon Labs", "versions": [{"lessThanOrEqual": "6.1.4, 9.1.0", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "product-security@silabs.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In Bluetooth Mesh SDK 6.1.4 and earlier, malformed extended advertisements can trigger out-of-bounds writes leading to stack corruption and remote code execution. These messages must come from a device that has already joined the network. Only provisioners supporting extended advertisements may be impacted."}], "id": "CVE-2026-5706", "lastModified": "2026-08-28T00:18:07.853", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.9, "baseSeverity": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:H/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "product-security@silabs.com", "type": "Secondary"}]}, "published": "2026-08-28T00:18:07.853", "references": [{"source": "product-security@silabs.com", "url": "https://github.com/SiliconLabs/gecko_sdk/releases"}, {"source": "product-security@silabs.com", "url": "https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/a45Vm000000Et6HIAS?operationContext=S1"}], "sourceIdentifier": "product-security@silabs.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-130"}], "source": "product-security@silabs.com", "type": "Secondary"}]}

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