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QSPI flash encryption side-channel leakage

CVSS 4.0 6.8 MEDIUMCheck source for fixed versionsKEV status unknown

cve-program · CVE-2026-18796

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-18796

Published

nRF5340

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Nordic Semiconductor ASA",
                    "product": "nRF5340",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "All build codes"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON

ChangeIntel

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Sources read 15 Nov 06:00 UTC · 254 of 275 readable · 250 fully read · documentation 469/469 current