CVE-2026-19293 PUBLISHED

SMP security request

Assigner: Silabs
Reserved: 07.08.2026 Published: 13.08.2026 Updated: 13.08.2026

SMP security request (from peripheral) does not include the maximum encryption key size supported. Using a key with less than the maximum keysize makes brute-forcing the key easier. See V6 in BLERP paper linked below.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Adjacent Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	silabs.com
Product	WiseConnect
Versions	Default: unaffected affected from 4.0.0 to 4.1.0 (excl.) affected from 2.0.0 to 2.14.0 (excl.)

References

https://docs.silabs.com/sisdk-release-notes/latest/sisdk-wifi-release-notes/sisdk-wifible-ble-release-notes
https://docs.silabs.com/rs9116-wiseconnect/latest/wifibt-wc-release-notes/rs9116-ble-release-notes#bug-fixes
https://community.silabs.com/068Vm00000x0yyH
https://www.ndss-symposium.org/ndss-paper/blerp-ble-re-pairing-attacks-and-defenses/

Problem Types

CWE-521 Weak password requirements CWE

Impacts

CAPEC-49 Password Brute Forcing