Critical severity9.0NVD Advisory· Published Dec 15, 2023· Updated Jun 17, 2026
CVE-2023-4020
CVE-2023-4020
Description
An unvalidated input in a library function responsible for communicating between secure and non-secure memory in Silicon Labs TrustZone implementation allows reading/writing of memory in the secure region of memory from the non-secure region of memory.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3- cpe:2.3:a:silabs:gecko_software_development_kit:*:*:*:*:*:*:*:*Range: >=1.0.0,<4.4.0
- Range: 1.0
Patches
Vulnerability mechanics
References
2- community.silabs.com/069Vm0000004b95IAAnvdPermissions Required
- github.com/SiliconLabs/gecko_sdk/releasesnvdRelease Notes
News mentions
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