What is CVE-2023-4280?

CVE-2023-4280 is a critical-severity vulnerability in Silabs Gecko Software Development Kit, classified under Out-of-bounds Read. CVSS score: 9.3/10. Published 2024-01-02.

How severe is CVE-2023-4280?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Out-of-bounds Read in Silabs Gecko Software Development Kit

CVE-2023-4280

An unvalidated input in Silicon Labs TrustZone implementation in v4.3.x and earlier of the Gecko SDK allows an attacker to access the trusted region of memory from the untrusted region.

Vulnerability class: Buffer Overflow

Published 2024-01-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.4th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Silabs Gecko Software Development Kit
Silabs.com Gsdk — versions 1.0

Weakness classification (CWE)

References

github.com/SiliconLabs/gecko_sdk (Product)
community.silabs.com/069Vm0000004NinIAE (Permissions Required)

Frequently asked questions

What is CVE-2023-4280?: CVE-2023-4280 is a critical-severity vulnerability in Silabs Gecko Software Development Kit, classified under Out-of-bounds Read. CVSS score: 9.3/10. Published 2024-01-02.
How severe is CVE-2023-4280?: Critical severity. CVSS v3 base score is 9.3 out of 10.