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CVE-2026-5706

Buffer overflow in Bluetooth Mesh SDK when handling extended advertisements

HIGH
8.9
CVSS Score
Published: August 27, 2026 at 10:13 PM UTC
Updated: September 8, 2026 at 07:29 PM UTC
1 product affected across 1 vendorBluetooth Mesh SDK

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Severity
HIGH8.9
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Bluetooth Mesh SDK· Silicon
60%
v ≤ 6.1.4, 9.1.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor AdvisoryPermissions Required
Source: cverecord
https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/a45Vm000000Et6HIAS?operationContext=S1
Patch
Source: cverecord
https://github.com/SiliconLabs/gecko_sdk/releases

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.9HIGHSilabs
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-130

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