What is CVE-2023-3487?

CVE-2023-3487 is a high-severity vulnerability in Silabs Gecko Bootloader, classified under Out-of-bounds Read. CVSS score: 7.7/10. Published 2023-10-20.

How severe is CVE-2023-3487?

High severity. CVSS v3 base score is 7.7 out of 10.

Out-of-bounds Read in Silabs Gecko Bootloader

CVE-2023-3487

An integer overflow in Silicon Labs Gecko Bootloader version 4.3.1 and earlier allows unbounded memory access when reading from or writing to storage slots.

Vulnerability class: Buffer Overflow

Published 2023-10-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.6th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000

Affected products

Silabs Gecko Bootloader
Silabs.com Gsdk — versions 1.0

Weakness classification (CWE)

References

github.com/SiliconLabs/gecko_sdk/releases (Release Notes)
community.silabs.com/s/contentdocument/0698Y00000ZmXqLQAV (Permissions Required)

Frequently asked questions

What is CVE-2023-3487?: CVE-2023-3487 is a high-severity vulnerability in Silabs Gecko Bootloader, classified under Out-of-bounds Read. CVSS score: 7.7/10. Published 2023-10-20.
How severe is CVE-2023-3487?: High severity. CVSS v3 base score is 7.7 out of 10.