CVE-2026-4526

In EmberZNet v9.0.2 and earlier, malformed global ZCL messages can trigger out-of-bounds reads in framework parsing logic and terminate the process. These messages must come from a device that has already joined the network, and no information leakage back to the sender was observed.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/SiliconLabsSoftware/sisdk-release/	Not Applicable
https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000pEGPQIA4?operationContext=S1	Permissions Required

Configurations

Configuration 1 (hide)

cpe:2.3:a:silabs:emberznet:*:*:*:*:*:*:*:*

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) En EmberZNet v9.0.2 y versiones anteriores, los mensajes ZCL globales malformados pueden desencadenar lecturas fuera de límites en la lógica de análisis del framework y terminar el proceso. Estos mensajes deben provenir de un dispositivo que ya se ha unido a la red, y no se observó fuga de información de vuelta al remitente.

Information

Published : 2026-06-25 14:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-4526

Mitre link : CVE-2026-4526

CVE.ORG link : CVE-2026-4526

JSON object : View

Products Affected

silabs

emberznet

CWE

CWE-125

Out-of-bounds Read

{"id": "CVE-2026-4526", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4526", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-25T14:04:19.829011Z"}}], "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:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "product-security@silabs.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.1, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "product-security@silabs.com", "affectedData": [{"repo": "https://github.com/SiliconLabs/simplicity_sdk", "vendor": "Silicon Labs", "product": "EmberZNet", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "9.0.2"}], "packageName": "EmberZNet", "defaultStatus": "unaffected"}]}], "published": "2026-06-25T14:16:42.313", "references": [{"url": "https://github.com/SiliconLabsSoftware/sisdk-release/", "tags": ["Not Applicable"], "source": "product-security@silabs.com"}, {"url": "https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/069Vm00000pEGPQIA4?operationContext=S1", "tags": ["Permissions Required"], "source": "product-security@silabs.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "product-security@silabs.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "In EmberZNet v9.0.2 and earlier, malformed global ZCL messages can trigger out-of-bounds reads in framework parsing logic and terminate the process. These messages must come from a device that has already joined the network, and no information leakage back to the sender was observed."}, {"lang": "es", "value": "En EmberZNet v9.0.2 y versiones anteriores, los mensajes ZCL globales malformados pueden desencadenar lecturas fuera de l\u00edmites en la l\u00f3gica de an\u00e1lisis del framework y terminar el proceso. Estos mensajes deben provenir de un dispositivo que ya se ha unido a la red, y no se observ\u00f3 fuga de informaci\u00f3n de vuelta al remitente."}], "lastModified": "2026-10-25T23:10:00.167", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:silabs:emberznet:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DFB7F7FE-835F-49EA-B3FF-2512A8A1E797", "versionEndIncluding": "9.0.2"}], "operator": "OR"}]}], "sourceIdentifier": "product-security@silabs.com"}