CVE-2026-14297 Nordic Semiconductor ASA CVE debrief

Who should care

Defenders responsible for Bluetooth-enabled devices, particularly those using the affected firmware, should assess exposure and prioritize verification of affected versions. They should also implement secure coding practices to prevent similar vulnerabilities and monitor for potential exploitation attempts.

Why it matters

CVE-2026-14297 is a buffer overflow vulnerability in the Bluetooth CGMS RACP write handler. Defenders should prioritize verifying affected firmware versions, assessing exposure, and implementing secure coding practices to prevent similar vulnerabilities.

• Verify potential exposure due to unknown affected firmware versions
• Assess impact on device security due to buffer overflow vulnerability
• Implement secure coding practices to prevent similar vulnerabilities

Technical summary

The buffer overflow vulnerability exists in the Bluetooth CGMS RACP write handler, allowing an authenticated BLE peer to overflow a 20-byte static buffer into adjacent BSS memory. The impact of exploitation depends on the linker-assigned BSS layout of the specific firmware build. This vulnerability affects Bluetooth-enabled devices using the affected firmware. Defenders should prioritize verifying affected firmware versions and assessing exposure, as the vulnerability's impact is dependent on the specific firmware build.

Defensive priority

Defenders should prioritize verifying the affected firmware versions and assessing exposure, as the vulnerability's impact is dependent on the specific firmware build.

Recommended defensive actions

• Verify the affected firmware versions and assess exposure
• Implement secure coding practices to prevent buffer overflows
• Monitor for potential exploitation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD vulnerability detail provide information on the buffer overflow vulnerability in the Bluetooth CGMS RACP write handler. The impact of exploitation depends on the linker-assigned BSS layout of the specific firmware build, which may vary. Defenders should verify potential exposure due to unknown affected firmware versions and assess impact on device security. The Bluetooth CGMS RACP write handler allows an authenticated BLE peer to overflow a 20-byte static buffer into adjacent BSS memory.

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.