# CVE-2026-102730: Memory corruption in eclipse-threadx/levelx(NAND driver)

> An attacker can achieve arbitrary code execution by mounting a malicious NAND flash image that triggers a heap overflow in the LevelX NAND driver.

- **Severity:** High 8.6 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Sep 2026
- **Updated:** 29 Sep 2026
- **Also known as:** GHSA-g54v-9g2q-gvrg

## What is CVE-2026-102730?

CVE-2026-102730 is a high-severity memory corruption vulnerability in eclipse-threadx/levelx(NAND driver), published on 29 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Mounting an attacker-controlled NAND flash image (`lx_nand_flash_open()`) triggers an unbounded out-of-bounds heap **write** in LevelX's NAND flash-translation-layer metadata parser that overwrites a driver function pointer in the control block, giving a demonstrated control-flow hijack — RIP set to a full 8-byte attacker-chosen value (register-verified). Two accompanying OOB reads. All reproduced verbatim under ASan at HEAD `9f1cfdc`. (The affected metadata-parser header states "Some portions generated by Copilot (Sonnet 4.6)" — an AI-generated parser with an unchecked on-flash count.)

Weakness: CWE-787 (Out-of-bounds Write), CWE-1284 (Improper Validation of Specified Quantity in Input)

## Which versions are affected by CVE-2026-102730?


## How do I fix CVE-2026-102730?

No fix has been published for CVE-2026-102730 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-102730 being exploited?

There is no known exploitation of CVE-2026-102730 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-102730 and fix it if it is affected.

What it is: CVE-2026-102730 is a high-severity memory corruption vulnerability in eclipse-threadx/levelx(NAND driver), published on 29 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-102730 in the wild and no public exploit code.

Affected product: eclipse-threadx/levelx(NAND driver). No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-102730/ (Markdown: https://insights.sbomify.com/CVE-2026-102730/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-102730
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-102730
- OSV: https://osv.dev/vulnerability/CVE-2026-102730

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-102730/
Summaries are generated and may contain mistakes; the official description above is the record.