High severity · published Aug 27, 2026
CVE-2026-5706
Buffer overflow in Bluetooth Mesh SDK when handling extended advertisements
8.9
CVSS
0.4%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BM
BT Mesh SDK · Silicon Labs
through 6.1.4, 9.1.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5706
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5706
github.com
https://github.com/SiliconLabs/gecko_sdk/releases
siliconlabs.lightning.force.com
https://siliconlabs.lightning.force.com/sfc/servlet.shepherd/document/download/a45Vm000000Et6HIAS?operationContext=S1