CVE-2026-18796QSPI flash encryption side-channel leakage
Updated under an hour ago ()
Does this affect you?
It affects Nordic Semiconductor ASA nRF5340. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.8 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-1342
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- YesWeHack
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Nordic Semiconductor ASA nRF5340 nordic_semiconductor_asa:nrf5340 (from the name) | All build codes | CNA record |
References
- https://docs.nordicsemi.com/r/bundle/struct_sa/page/struct/sa.html
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.