CVE-2026-18796 — QSPI flash encryption side-channel leakage

CVE-2026-18796

QSPI flash encryption side-channel leakage PUBLISHED

Description (CNA)

Any application that uses external QSPI flash for encrypted XIP on nRF5340 and relies on that encryption for confidentiality and/or integrity of the externally stored code. No specific nRF Connect SDK version is the root cause; the weakness is in the on-the-fly decryption scheme.

Affected (CNA)

Vendor / product	Versions
Nordic Semiconductor ASA / nRF5340	affected All build codes

CWE

CWE-1342

References

https://docs.nordicsemi.com/r/bundle/struct_sa/page/struct/sa.html

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.