Vulnerability · Published Aug 13, 2026 · Assigned by Silabs
CVE-2026-19291Bluetooth re-pairing can use a lower security level than previous
High 8.8
In plain English
A high-severity authentication bypass by spoofing in WiseConnect from silabs.com. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.4%top 71.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Bluetooth re-pairing with an existing device can use a lower security level. RS9116W and SiWx91x impacted. See V3 in the BLERP paper linked below.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| silabs.com | WiseConnect | 4.0.0 – before 4.1.02.0.0 – before 2.14.0 |
Weakness: CWE-290 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://docs.silabs.com/sisdk-release-notes/latest/sisdk-wifi-release-notes/sisdk-wifible-ble-release-notes release-notes
- https://docs.silabs.com/rs9116-wiseconnect/latest/wifibt-wc-release-notes/rs9116-ble-release-notes#bug-fixes release-notes
- https://community.silabs.com/068Vm00000x0yyH vendor-advisory, permissions-required
- https://www.ndss-symposium.org/ndss-paper/blerp-ble-re-pairing-attacks-and-defenses/ related