CVE-2023-4020

moderate-risk

Published 2023-12-15

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.

Do I need to act?

0.22% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.0/10 Critical

LOCAL / LOW complexity

Affected Products (1)

Gecko Software Development Kit

Affected Vendors

Silabs

References (4)

Permissions Required https://community.silabs.com/069Vm0000004b95IAA

Release Notes https://github.com/SiliconLabs/gecko_sdk/releases

Permissions Required https://community.silabs.com/069Vm0000004b95IAA

Release Notes https://github.com/SiliconLabs/gecko_sdk/releases

/ 100

moderate-risk

Severity 27/34 · High

Exploitability 1/34 · Minimal

Exposure 5/34 · Minimal