CVE-2026-5706

Buffer overflow in Bluetooth Mesh SDK when handling extended advertisements

Published Aug 27, 2026 CVSS 4.0 · 8.9 High EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Silicon Labs
Silicon Labs bt Mesh Sdk
Vendors & Products Silicon Labs
Silicon Labs bt Mesh Sdk
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Buffer overflow in Bluetooth Mesh SDK when handling extended advertisements
Weaknesses CWE-130
References
Metrics cvssV4_0

{'score': 8.9, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Silabs
Published
Updated
Aug 28, 2026, 3:58 PM
Reserved
Apr 6, 2026, 3:58 PM
Status
Awaiting Analysis
Published
Aug 28, 2026, 12:18 AM
Modified
Sep 8, 2026, 7:12 PM