{"id":"CVE-2026-5706","aliases":["EUVD-2026-67297","GHSA-f29w-mc54-fh2c"],"status":"published","title":"Buffer overflow in Bluetooth Mesh SDK when handling extended advertisements","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.","severity":{"version":"4.0","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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00391,"percentile":0.33545,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-130"],"published":"2026-08-27T22:13:56Z","modified":"2026-09-08T19:12:59Z","products":[{"vendor":"silicon labs","product":"bt mesh sdk"}],"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"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5706"},{"url":"https://github.com/advisories/GHSA-f29w-mc54-fh2c"}],"sources":{"cve":[{"id":"CVE-2026-5706","title":"Buffer overflow in Bluetooth Mesh SDK when handling extended advertisements","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.","status":"published","published":"2026-08-27T22:13:56.225Z","modified":"2026-08-28T15:58:36.339Z","cvss":[{"version":"4.0","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","level":"high","assessor":"cna"}],"cwes":["CWE-130"],"updated_at":"2026-11-02T13:39:27.849196Z"}],"euvd":[{"id":"EUVD-2026-67297","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.","status":"published","published":"2026-08-27T22:13:56Z","modified":"2026-08-28T15:58:36Z","cvss":[{"version":"4.0","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","level":"high"}],"updated_at":"2026-11-02T18:01:23.104802Z"}],"ghsa":[{"id":"GHSA-f29w-mc54-fh2c","title":"In Bluetooth Mesh SDK 6.1.4 and earlier, malformed extended advertisements can trigger out-of...","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.","status":"published","published":"2026-08-28T00:32:02Z","modified":"2026-08-28T00:32:03Z","cvss":[{"version":"4.0","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/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","level":"high"}],"cwes":["CWE-130"],"updated_at":"2026-11-02T15:11:05.645531Z"}],"nvd":[{"id":"CVE-2026-5706","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.","status":"published","published":"2026-08-28T00:18:07.853Z","modified":"2026-09-08T19:12:59.557Z","cvss":[{"version":"4.0","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/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","level":"high","assessor":"secondary"}],"cwes":["CWE-130"],"updated_at":"2026-11-02T14:12:42.035353Z"}]}}