CVE-2026-19292 silabs.com CVE debrief

Who should care

Defenders responsible for BLE devices, particularly those using Silabs technology, should assess exposure and prioritize verification and patching. This includes reviewing current configurations and applying patches or updates if available. Additionally, defenders should monitor for suspicious activity related to BLE devices and perform a thorough review of affected devices and configurations to ensure they are properly secured.

Why it matters

This vulnerability in BLE devices allows for reduced security during re-pairing, potentially enabling attackers to brute-force the Long Term Key (LTK), which could lead to unauthorized access. Defenders responsible for BLE devices, particularly those using Silabs technology, should assess exposure and prioritize verification and patching.

• Verification of affected devices and configurations is necessary to prevent potential LTK brute-forcing.
• Defenders should review current configurations and apply patches or updates if available to mitigate this vulnerability.
• Monitoring for suspicious activity related to BLE devices can help detect potential exploitation attempts.

Technical summary

The CVE-2026-19292 vulnerability allows for a reduced security level during BLE re-pairing, potentially making it easier for attackers to brute-force the LTK. This could lead to unauthorized access to sensitive information. The vulnerability affects BLE devices, particularly those using Silabs technology. Defenders should prioritize verifying the affected devices and assessing their exposure, reviewing current configurations and applying patches or updates if available. The vulnerability is related to the reduced security level during re-pairing, which could enable attackers to brute-force the LTK.

Defensive priority

Defenders should prioritize verifying the affected devices and assessing their exposure, reviewing current configurations and applying patches or updates if available.

Recommended defensive actions

• Verify if devices using BLE are exposed to this vulnerability
• Review current configurations and apply patches or updates if available
• Monitor for any suspicious activity related to BLE devices
• Perform a thorough review of affected devices and configurations to ensure they are properly secured
• Implement compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions and retest remediated assets to ensure they are properly secured
• Review relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details about the vulnerability, but specific affected versions and remediation steps require verification from official sources. The vulnerability is related to BLE devices, particularly those using Silabs technology. Defenders should verify the affected devices and configurations to prevent potential LTK brute-forcing. The source references from Silabs community and documentation provide additional context. However, the exact scope of affected products and versions is not explicitly stated, and a

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.