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CVE-2026-18796

QSPI flash encryption side-channel leakage

MEDIUM
6.8
CVSS Score
Published: September 7, 2026 at 08:07 AM UTC
Updated: September 9, 2026 at 05:27 PM UTC
1 product affected across 1 vendornRF5340

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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.8MEDIUMYesWeHack
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-1342

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