CVE-2026-18796

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.

Scoring

Severity

MEDIUM

CVSS base score

6.8

CVSS vector

CVSS:4.0/AV:P/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:N/SA:N

EPSS probability

0.08%

CWE

CWE-1342

Published

2026-09-07

Last modified

2026-09-10

Affected products

• Nordic Semiconductor ASA nRF5340

Weakness type

• CWE-1342

Related vulnerabilities

• CVE-2023-28746 — Information exposure through microarchitectural state after transient execution from some register...
• CVE-2022-40982 — Information exposure through microarchitectural state after transient execution in certain vector...

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