What’s Vulnerable › Vulnerabilities

CVE-2026-19292: Bluetooth re-pairing with legitimate device can use lower security level

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-10-23
• Weakness: CWE-305

Description

Re-pairing with a legitimate device can use a lower security level than previous making brute-forcing the LTK easier. See V4 in the BLERP paper linked below.

Affected products

• silabs.com WiseConnect: from 4.0.0 before 4.1.0; from 2.0.0 before 2.14.0 — fixed in 2.14.0, 4.1.0

How to fix

Upgrade to a fixed version: silabs.com WiseConnect 2.14.0, 4.1.0. Check the vendor advisory for mitigations.

References

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

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